build/rpmfc.c

Go to the documentation of this file.

#include "system.h"

#include <signal.h>     /* getOutputFrom() */

#include <rpmbuild.h>
#include <argv.h>
#include <rpmfc.h>

#define _RPMDS_INTERNAL
#include <rpmds.h>
#include <rpmfi.h>

#if HAVE_GELF_H
#include <gelf.h>

#if !defined(DT_GNU_HASH)
#define DT_GNU_HASH             0x6ffffef5
#endif

#endif

#include "debug.h"

/*@access rpmds @*/

static int rpmfcExpandAppend(/*@out@*/ ARGV_t * argvp, const ARGV_t av)
        /*@globals rpmGlobalMacroContext, h_errno @*/
        /*@modifies *argvp, rpmGlobalMacroContext @*/
        /*@requires maxRead(argvp) >= 0 @*/
{
    ARGV_t argv = *argvp;
    int argc = argvCount(argv);
    int ac = argvCount(av);
    int i;

/*@-bounds@*/   /* LCL: internal error */
    argv = xrealloc(argv, (argc + ac + 1) * sizeof(*argv));
/*@=bounds@*/
    for (i = 0; i < ac; i++)
        argv[argc + i] = rpmExpand(av[i], NULL);
    argv[argc + ac] = NULL;
    *argvp = argv;
    return 0;
}

/*@null@*/
static StringBuf getOutputFrom(/*@null@*/ const char * dir, ARGV_t argv,
                        const char * writePtr, int writeBytesLeft,
                        int failNonZero)
        /*@globals fileSystem, internalState@*/
        /*@modifies fileSystem, internalState@*/
{
    pid_t child, reaped;
    int toProg[2];
    int fromProg[2];
    int status;
    void *oldhandler;
    StringBuf readBuff;
    int done;

    /*@-type@*/ /* FIX: cast? */
    oldhandler = signal(SIGPIPE, SIG_IGN);
    /*@=type@*/

    toProg[0] = toProg[1] = 0;
    (void) pipe(toProg);
    fromProg[0] = fromProg[1] = 0;
    (void) pipe(fromProg);
    
    if (!(child = fork())) {
        (void) close(toProg[1]);
        (void) close(fromProg[0]);
        
        (void) dup2(toProg[0], STDIN_FILENO);   /* Make stdin the in pipe */
        (void) dup2(fromProg[1], STDOUT_FILENO); /* Make stdout the out pipe */

        (void) close(toProg[0]);
        (void) close(fromProg[1]);

        if (dir) {
            (void) chdir(dir);
        }
        
        rpmMessage(RPMMESS_DEBUG, _("\texecv(%s) pid %d\n"),
                        argv[0], (unsigned)getpid());

        unsetenv("MALLOC_CHECK_");
        (void) execvp(argv[0], (char *const *)argv);
        /* XXX this error message is probably not seen. */
        rpmError(RPMERR_EXEC, _("Couldn't exec %s: %s\n"),
                argv[0], strerror(errno));
        _exit(RPMERR_EXEC);
    }
    if (child < 0) {
        rpmError(RPMERR_FORK, _("Couldn't fork %s: %s\n"),
                argv[0], strerror(errno));
        return NULL;
    }

    (void) close(toProg[0]);
    (void) close(fromProg[1]);

    /* Do not block reading or writing from/to prog. */
    (void) fcntl(fromProg[0], F_SETFL, O_NONBLOCK);
    (void) fcntl(toProg[1], F_SETFL, O_NONBLOCK);
    
    readBuff = newStringBuf();

    do {
        fd_set ibits, obits;
        struct timeval tv;
        int nfd, nbw, nbr;
        int rc;

        done = 0;
top:
        FD_ZERO(&ibits);
        FD_ZERO(&obits);
        if (fromProg[0] >= 0) {
            FD_SET(fromProg[0], &ibits);
        }
        if (toProg[1] >= 0) {
            FD_SET(toProg[1], &obits);
        }
        /* XXX values set to limit spinning with perl doing ~100 forks/sec. */
        tv.tv_sec = 0;
        tv.tv_usec = 10000;
        nfd = ((fromProg[0] > toProg[1]) ? fromProg[0] : toProg[1]);
        if ((rc = select(nfd, &ibits, &obits, NULL, &tv)) < 0) {
            if (errno == EINTR)
                goto top;
            break;
        }

        /* Write any data to program */
        if (toProg[1] >= 0 && FD_ISSET(toProg[1], &obits)) {
          if (writePtr && writeBytesLeft > 0) {
            if ((nbw = write(toProg[1], writePtr,
                    (1024<writeBytesLeft) ? 1024 : writeBytesLeft)) < 0) {
                if (errno != EAGAIN) {
                    perror("getOutputFrom()");
                    exit(EXIT_FAILURE);
                }
                nbw = 0;
            }
            writeBytesLeft -= nbw;
            writePtr += nbw;
          } else if (toProg[1] >= 0) {  /* close write fd */
            (void) close(toProg[1]);
            toProg[1] = -1;
          }
        }
        
        /* Read any data from prog */
/*@-boundswrite@*/
        {   char buf[BUFSIZ+1];
            while ((nbr = read(fromProg[0], buf, sizeof(buf)-1)) > 0) {
                buf[nbr] = '\0';
                appendStringBuf(readBuff, buf);
            }
        }
/*@=boundswrite@*/

        /* terminate on (non-blocking) EOF or error */
        done = (nbr == 0 || (nbr < 0 && errno != EAGAIN));

    } while (!done);

    /* Clean up */
    if (toProg[1] >= 0)
        (void) close(toProg[1]);
    if (fromProg[0] >= 0)
        (void) close(fromProg[0]);
    /*@-type@*/ /* FIX: cast? */
    (void) signal(SIGPIPE, oldhandler);
    /*@=type@*/

    /* Collect status from prog */
    reaped = waitpid(child, &status, 0);
    rpmMessage(RPMMESS_DEBUG, _("\twaitpid(%d) rc %d status %x\n"),
        (unsigned)child, (unsigned)reaped, status);

    if (failNonZero && (!WIFEXITED(status) || WEXITSTATUS(status))) {
        rpmError(RPMERR_EXEC, _("%s failed\n"), argv[0]);
        return NULL;
    }
    if (writeBytesLeft) {
        rpmError(RPMERR_EXEC, _("failed to write all data to %s\n"), argv[0]);
        return NULL;
    }
    return readBuff;
}

int rpmfcExec(ARGV_t av, StringBuf sb_stdin, StringBuf * sb_stdoutp,
                int failnonzero)
{
    const char * s = NULL;
    ARGV_t xav = NULL;
    ARGV_t pav = NULL;
    int pac = 0;
    int ec = -1;
    StringBuf sb = NULL;
    const char * buf_stdin = NULL;
    int buf_stdin_len = 0;
    int xx;

    if (sb_stdoutp)
        *sb_stdoutp = NULL;
    if (!(av && *av))
        goto exit;

    /* Find path to executable with (possible) args. */
    s = rpmExpand(av[0], NULL);
    if (!(s && *s))
        goto exit;

    /* Parse args buried within expanded exacutable. */
    pac = 0;
    xx = poptParseArgvString(s, &pac, (const char ***)&pav);
    if (!(xx == 0 && pac > 0 && pav != NULL))
        goto exit;

    /* Build argv, appending args to the executable args. */
    xav = NULL;
/*@-boundswrite@*/
    xx = argvAppend(&xav, pav);
    if (av[1])
        xx = rpmfcExpandAppend(&xav, av + 1);
/*@=boundswrite@*/

    if (sb_stdin != NULL) {
        buf_stdin = getStringBuf(sb_stdin);
        buf_stdin_len = strlen(buf_stdin);
    }

    /* Read output from exec'd helper. */
    sb = getOutputFrom(NULL, xav, buf_stdin, buf_stdin_len, failnonzero);

/*@-branchstate@*/
    if (sb_stdoutp != NULL) {
        *sb_stdoutp = sb;
        sb = NULL;      /* XXX don't free */
    }
/*@=branchstate@*/

    ec = 0;

exit:
    sb = freeStringBuf(sb);
    xav = argvFree(xav);
    pav = _free(pav);   /* XXX popt mallocs in single blob. */
    s = _free(s);
    return ec;
}

static int rpmfcSaveArg(/*@out@*/ ARGV_t * argvp, const char * key)
        /*@modifies *argvp @*/
        /*@requires maxSet(argvp) >= 0 @*/
{
    int rc = 0;

    if (argvSearch(*argvp, key, NULL) == NULL) {
        rc = argvAdd(argvp, key);
        rc = argvSort(*argvp, NULL);
    }
    return rc;
}

static char * rpmfcFileDep(/*@returned@*/ char * buf, int ix,
                /*@null@*/ rpmds ds)
        /*@modifies buf @*/
        /*@requires maxSet(buf) >= 0 @*/
        /*@ensures maxRead(buf) == 0 @*/
{
    int_32 tagN = rpmdsTagN(ds);
    char deptype = 'X';

    buf[0] = '\0';
    switch (tagN) {
    case RPMTAG_PROVIDENAME:
        deptype = 'P';
        break;
    case RPMTAG_REQUIRENAME:
        deptype = 'R';
        break;
    }
/*@-nullpass@*/
    if (ds != NULL)
        sprintf(buf, "%08d%c %s %s 0x%08x", ix, deptype,
                rpmdsN(ds), rpmdsEVR(ds), rpmdsFlags(ds));
/*@=nullpass@*/
    return buf;
};

static int rpmfcHelper(rpmfc fc, unsigned char deptype, const char * nsdep)
        /*@globals rpmGlobalMacroContext, h_errno, fileSystem, internalState @*/
        /*@modifies fc, rpmGlobalMacroContext, fileSystem, internalState @*/
{
    const char * fn = fc->fn[fc->ix];
    char buf[BUFSIZ];
    StringBuf sb_stdout = NULL;
    StringBuf sb_stdin;
    const char *av[2];
    rpmds * depsp, ds;
    const char * N;
    const char * EVR;
    int_32 Flags, dsContext, tagN;
    ARGV_t pav;
    const char * s;
    int pac;
    int xx;
    int i;

    switch (deptype) {
    default:
        return -1;
        /*@notreached@*/ break;
    case 'P':
        if (fc->skipProv)
            return 0;
        xx = snprintf(buf, sizeof(buf), "%%{?__%s_provides}", nsdep);
        depsp = &fc->provides;
        dsContext = RPMSENSE_FIND_PROVIDES;
        tagN = RPMTAG_PROVIDENAME;
        break;
    case 'R':
        if (fc->skipReq)
            return 0;
        xx = snprintf(buf, sizeof(buf), "%%{?__%s_requires}", nsdep);
        depsp = &fc->requires;
        dsContext = RPMSENSE_FIND_REQUIRES;
        tagN = RPMTAG_REQUIRENAME;
        break;
    }
    buf[sizeof(buf)-1] = '\0';
    av[0] = buf;
    av[1] = NULL;

    sb_stdin = newStringBuf();
    appendLineStringBuf(sb_stdin, fn);
    sb_stdout = NULL;
/*@-boundswrite@*/
    xx = rpmfcExec(av, sb_stdin, &sb_stdout, 0);
/*@=boundswrite@*/
    sb_stdin = freeStringBuf(sb_stdin);

    if (xx == 0 && sb_stdout != NULL) {
        pav = NULL;
        xx = argvSplit(&pav, getStringBuf(sb_stdout), " \t\n\r");
        pac = argvCount(pav);
        if (pav)
        for (i = 0; i < pac; i++) {
            N = pav[i];
            EVR = "";
            Flags = dsContext;
/*@-branchstate@*/
            if (pav[i+1] && strchr("=<>", *pav[i+1])) {
                i++;
                for (s = pav[i]; *s; s++) {
                    switch(*s) {
                    default:
assert(*s != '\0');
                        /*@switchbreak@*/ break;
                    case '=':
                        Flags |= RPMSENSE_EQUAL;
                        /*@switchbreak@*/ break;
                    case '<':
                        Flags |= RPMSENSE_LESS;
                        /*@switchbreak@*/ break;
                    case '>':
                        Flags |= RPMSENSE_GREATER;
                        /*@switchbreak@*/ break;
                    }
                }
                i++;
                EVR = pav[i];
assert(EVR != NULL);
            }
/*@=branchstate@*/


            /* Add tracking dependency for versioned Provides: */
            if (!fc->tracked && deptype == 'P' && *EVR != '\0') {
                ds = rpmdsSingle(RPMTAG_REQUIRENAME,
                        "rpmlib(VersionedDependencies)", "3.0.3-1",
                        RPMSENSE_RPMLIB|(RPMSENSE_LESS|RPMSENSE_EQUAL));
                xx = rpmdsMerge(&fc->requires, ds);
                ds = rpmdsFree(ds);
                fc->tracked = 1;
            }

            ds = rpmdsSingle(tagN, N, EVR, Flags);

            /* Add to package dependencies. */
            xx = rpmdsMerge(depsp, ds);

            /* Add to file dependencies. */
/*@-boundswrite@*/
            xx = rpmfcSaveArg(&fc->ddict, rpmfcFileDep(buf, fc->ix, ds));
/*@=boundswrite@*/

            ds = rpmdsFree(ds);
        }

        pav = argvFree(pav);
    }
    sb_stdout = freeStringBuf(sb_stdout);

    return 0;
}

/*@unchecked@*/ /*@observer@*/
static struct rpmfcTokens_s rpmfcTokens[] = {
  { "directory",                RPMFC_DIRECTORY|RPMFC_INCLUDE },

  { " shared object",           RPMFC_LIBRARY },
  { " executable",              RPMFC_EXECUTABLE },
  { " statically linked",       RPMFC_STATIC },
  { " not stripped",            RPMFC_NOTSTRIPPED },
  { " archive",                 RPMFC_ARCHIVE },

  { "ELF 32-bit",               RPMFC_ELF32|RPMFC_INCLUDE },
  { "ELF 64-bit",               RPMFC_ELF64|RPMFC_INCLUDE },

  { " script",                  RPMFC_SCRIPT },
  { " text",                    RPMFC_TEXT },
  { " document",                RPMFC_DOCUMENT },

  { " compressed",              RPMFC_COMPRESSED },

  { "troff or preprocessor input",      RPMFC_MANPAGE|RPMFC_INCLUDE },
  { "GNU Info",                 RPMFC_MANPAGE|RPMFC_INCLUDE },

  { "perl script text",         RPMFC_PERL|RPMFC_INCLUDE },
  { "Perl5 module source text", RPMFC_PERL|RPMFC_MODULE|RPMFC_INCLUDE },

  { " /usr/bin/python",         RPMFC_PYTHON|RPMFC_INCLUDE },

  /* XXX "a /usr/bin/python -t script text executable" */
  /* XXX "python 2.3 byte-compiled" */
  { "python ",                  RPMFC_PYTHON|RPMFC_INCLUDE },

  /* XXX .NET executables and libraries.  file(1) cannot differ from win32 
   * executables unfortunately :( */
  { "PE executable",            RPMFC_MONO|RPMFC_INCLUDE },

  { "current ar archive",       RPMFC_STATIC|RPMFC_LIBRARY|RPMFC_ARCHIVE|RPMFC_INCLUDE },

  { "Zip archive data",         RPMFC_COMPRESSED|RPMFC_ARCHIVE|RPMFC_INCLUDE },
  { "tar archive",              RPMFC_ARCHIVE|RPMFC_INCLUDE },
  { "cpio archive",             RPMFC_ARCHIVE|RPMFC_INCLUDE },
  { "RPM v3",                   RPMFC_ARCHIVE|RPMFC_INCLUDE },
  { "RPM v4",                   RPMFC_ARCHIVE|RPMFC_INCLUDE },

  { " image",                   RPMFC_IMAGE|RPMFC_INCLUDE },
  { " font",                    RPMFC_FONT|RPMFC_INCLUDE },
  { " Font",                    RPMFC_FONT|RPMFC_INCLUDE },

  { " commands",                RPMFC_SCRIPT|RPMFC_INCLUDE },
  { " script",                  RPMFC_SCRIPT|RPMFC_INCLUDE },

  { "empty",                    RPMFC_WHITE|RPMFC_INCLUDE },

  { "HTML",                     RPMFC_WHITE|RPMFC_INCLUDE },
  { "SGML",                     RPMFC_WHITE|RPMFC_INCLUDE },
  { "XML",                      RPMFC_WHITE|RPMFC_INCLUDE },

  { " program text",            RPMFC_WHITE|RPMFC_INCLUDE },
  { " source",                  RPMFC_WHITE|RPMFC_INCLUDE },
  { "GLS_BINARY_LSB_FIRST",     RPMFC_WHITE|RPMFC_INCLUDE },
  { " DB ",                     RPMFC_WHITE|RPMFC_INCLUDE },

  { "ASCII English text",       RPMFC_WHITE|RPMFC_INCLUDE },
  { "ASCII text",               RPMFC_WHITE|RPMFC_INCLUDE },
  { "ISO-8859 text",            RPMFC_WHITE|RPMFC_INCLUDE },

  { "symbolic link to",         RPMFC_SYMLINK|RPMFC_INCLUDE },
  { "socket",                   RPMFC_DEVICE },
  { "special",                  RPMFC_DEVICE },

  { "ASCII",                    RPMFC_WHITE },
  { "ISO-8859",                 RPMFC_WHITE },

  { "data",                     RPMFC_WHITE },

  { "application",              RPMFC_WHITE },
  { "boot",                     RPMFC_WHITE },
  { "catalog",                  RPMFC_WHITE },
  { "code",                     RPMFC_WHITE },
  { "file",                     RPMFC_WHITE },
  { "format",                   RPMFC_WHITE },
  { "message",                  RPMFC_WHITE },
  { "program",                  RPMFC_WHITE },

  { "broken symbolic link to ", RPMFC_WHITE|RPMFC_ERROR },
  { "can't read",               RPMFC_WHITE|RPMFC_ERROR },
  { "can't stat",               RPMFC_WHITE|RPMFC_ERROR },
  { "executable, can't read",   RPMFC_WHITE|RPMFC_ERROR },
  { "core file",                RPMFC_WHITE|RPMFC_ERROR },

  { NULL,                       RPMFC_BLACK }
};

int rpmfcColoring(const char * fmstr)
{
    rpmfcToken fct;
    int fcolor = RPMFC_BLACK;

    for (fct = rpmfcTokens; fct->token != NULL; fct++) {
        if (strstr(fmstr, fct->token) == NULL)
            continue;
        fcolor |= fct->colors;
        if (fcolor & RPMFC_INCLUDE)
            return fcolor;
    }
    return fcolor;
}

void rpmfcPrint(const char * msg, rpmfc fc, FILE * fp)
{
    int fcolor;
    int ndx;
    int cx;
    int dx;
    int fx;

int nprovides;
int nrequires;

    if (fp == NULL) fp = stderr;

    if (msg)
        fprintf(fp, "===================================== %s\n", msg);

nprovides = rpmdsCount(fc->provides);
nrequires = rpmdsCount(fc->requires);

    if (fc)
    for (fx = 0; fx < fc->nfiles; fx++) {
assert(fx < fc->fcdictx->nvals);
        cx = fc->fcdictx->vals[fx];
assert(fx < fc->fcolor->nvals);
        fcolor = fc->fcolor->vals[fx];

        fprintf(fp, "%3d %s", fx, fc->fn[fx]);
        if (fcolor != RPMFC_BLACK)
                fprintf(fp, "\t0x%x", fc->fcolor->vals[fx]);
        else
                fprintf(fp, "\t%s", fc->cdict[cx]);
        fprintf(fp, "\n");

        if (fc->fddictx == NULL || fc->fddictn == NULL)
            continue;

assert(fx < fc->fddictx->nvals);
        dx = fc->fddictx->vals[fx];
assert(fx < fc->fddictn->nvals);
        ndx = fc->fddictn->vals[fx];

        while (ndx-- > 0) {
            const char * depval;
            unsigned char deptype;
            unsigned ix;

            ix = fc->ddictx->vals[dx++];
            deptype = ((ix >> 24) & 0xff);
            ix &= 0x00ffffff;
            depval = NULL;
            switch (deptype) {
            default:
assert(depval != NULL);
                /*@switchbreak@*/ break;
            case 'P':
                if (nprovides > 0) {
assert(ix < nprovides);
                    (void) rpmdsSetIx(fc->provides, ix-1);
                    if (rpmdsNext(fc->provides) >= 0)
                        depval = rpmdsDNEVR(fc->provides);
                }
                /*@switchbreak@*/ break;
            case 'R':
                if (nrequires > 0) {
assert(ix < nrequires);
                    (void) rpmdsSetIx(fc->requires, ix-1);
                    if (rpmdsNext(fc->requires) >= 0)
                        depval = rpmdsDNEVR(fc->requires);
                }
                /*@switchbreak@*/ break;
            }
            if (depval)
                fprintf(fp, "\t%s\n", depval);
        }
    }
}

rpmfc rpmfcFree(rpmfc fc)
{
    if (fc) {
        fc->fn = argvFree(fc->fn);
        fc->fcolor = argiFree(fc->fcolor);
        fc->fcdictx = argiFree(fc->fcdictx);
        fc->fddictx = argiFree(fc->fddictx);
        fc->fddictn = argiFree(fc->fddictn);
        fc->cdict = argvFree(fc->cdict);
        fc->ddict = argvFree(fc->ddict);
        fc->ddictx = argiFree(fc->ddictx);

        fc->provides = rpmdsFree(fc->provides);
        fc->requires = rpmdsFree(fc->requires);

        fc->sb_java = freeStringBuf(fc->sb_java);
        fc->sb_perl = freeStringBuf(fc->sb_perl);
        fc->sb_python = freeStringBuf(fc->sb_python);

    }
    fc = _free(fc);
    return NULL;
}

rpmfc rpmfcNew(void)
{
    rpmfc fc = xcalloc(1, sizeof(*fc));
    return fc;
}

static int rpmfcSYMLINK(rpmfc fc)
{
    const char * fn = fc->fn[fc->ix];
    struct stat sb;
    int fdno;

    if (stat(fn, &sb) < 0)
        return -1;
    if (S_ISLNK(sb.st_mode))
        return -1;
    
    fdno = open(fn, O_RDONLY);
    if (fdno < 0) {
        return fdno;
    }

#if HAVE_GELF_H && HAVE_LIBELF
    Elf * elf = NULL;
    GElf_Ehdr ehdr_mem, * ehdr;
    int isElf64;
    int i, cnt;
    char * soname = NULL;
    char buf[BUFSIZ];
    char * t;
    rpmds ds;

    (void) elf_version(EV_CURRENT);
    elf = NULL;
    if ((elf = elf_begin (fdno, ELF_C_READ_MMAP, NULL)) == NULL
        || elf_kind(elf) != ELF_K_ELF
        || (ehdr = gelf_getehdr(elf, &ehdr_mem)) == NULL
        || ehdr->e_type != ET_DYN)
        goto exit;

    isElf64 = ehdr->e_ident[EI_CLASS] == ELFCLASS64;

    for (i = 0; i < ehdr->e_phnum; ++i) {
      GElf_Phdr phdr_mem;
      GElf_Phdr *phdr = gelf_getphdr (elf, i, &phdr_mem);
      GElf_Shdr shdr_mem;
      Elf_Data * data = NULL;
      Elf_Scn * scn;
      GElf_Shdr *shdr;

      if (phdr == NULL || phdr->p_type != PT_DYNAMIC)
          continue;

      scn = gelf_offscn(elf, phdr->p_offset);
      shdr = gelf_getshdr(scn, &shdr_mem);

      if (shdr != NULL && shdr->sh_type == SHT_DYNAMIC)
          data = elf_getdata (scn, NULL);
      if (data == NULL)
          continue; 
          
      for (cnt = 0; cnt < shdr->sh_size / shdr->sh_entsize; ++cnt) {
          GElf_Dyn dynmem;
          GElf_Dyn *dyn = gelf_getdyn (data, cnt, &dynmem);
          if (dyn == NULL)
              break;
          if (dyn->d_tag != DT_SONAME)
              continue;

          /* add the soname to package deps */
          soname = elf_strptr(elf, shdr->sh_link, dyn->d_un.d_val);
          if (soname == NULL)
              break;
          buf[0] = '\0';
          t = buf;
          t = stpcpy(t, soname);
#if !defined(__alpha__)
          if (isElf64)
              t = stpcpy(t, "()(64bit)");
#endif
          t++;
          /* Add to package dependencies. */
          if (!fc->skipReq) {
              ds = rpmdsSingle(RPMTAG_REQUIRENAME,
                           buf, "", RPMSENSE_FIND_REQUIRES);
              rpmdsMerge(&fc->requires, ds);
              rpmfcSaveArg(&fc->ddict, rpmfcFileDep(t, fc->ix, ds));
              ds = rpmdsFree(ds);
          }
          break;
      }
    }
exit:
    if (elf) (void) elf_end(elf);
    close(fdno);
    return 0;
#endif
    return -1;
}

static int rpmfcSCRIPT(rpmfc fc)
        /*@globals rpmGlobalMacroContext, h_errno, fileSystem, internalState @*/
        /*@modifies fc, rpmGlobalMacroContext, fileSystem, internalState @*/
{
    const char * fn = fc->fn[fc->ix];
    const char * bn;
    rpmds ds;
    char buf[BUFSIZ];
    FILE * fp;
    char * s, * se;
    int i;
    struct stat sb, * st = &sb;
    int is_executable;
    int xx;

    /* Only executable scripts are searched. */
    if (stat(fn, st) < 0)
        return -1;
    is_executable = (st->st_mode & (S_IXUSR|S_IXGRP|S_IXOTH));

    fp = fopen(fn, "r");
    if (fp == NULL || ferror(fp)) {
        if (fp) (void) fclose(fp);
        return -1;
    }

    /* Look for #! interpreter in first 10 lines. */
/*@-boundswrite@*/
    for (i = 0; i < 10; i++) {

        s = fgets(buf, sizeof(buf) - 1, fp);
        if (s == NULL || ferror(fp) || feof(fp))
            break;
        s[sizeof(buf)-1] = '\0';
        if (!(s[0] == '#' && s[1] == '!'))
            continue;
        s += 2;

        while (*s && strchr(" \t\n\r", *s) != NULL)
            s++;
        if (*s == '\0')
            continue;
        if (*s != '/')
            continue;

        for (se = s+1; *se; se++) {
            if (strchr(" \t\n\r", *se) != NULL)
                /*@innerbreak@*/ break;
        }
        *se = '\0';
        se++;

        if (is_executable) {
            /* Add to package requires. */
            ds = rpmdsSingle(RPMTAG_REQUIRENAME, s, "", RPMSENSE_FIND_REQUIRES);
            xx = rpmdsMerge(&fc->requires, ds);

            /* Add to file requires. */
            xx = rpmfcSaveArg(&fc->ddict, rpmfcFileDep(se, fc->ix, ds));

            ds = rpmdsFree(ds);
        }

        /* Set color based on interpreter name. */
        bn = basename(s);
        if (!strcmp(bn, "perl"))
            fc->fcolor->vals[fc->ix] |= RPMFC_PERL;
        else if (!strncmp(bn, "python", sizeof("python")-1))
            fc->fcolor->vals[fc->ix] |= RPMFC_PYTHON;

        break;
    }
/*@=boundswrite@*/

    (void) fclose(fp);

    if (fc->fcolor->vals[fc->ix] & RPMFC_PERL) {
        if (fc->fcolor->vals[fc->ix] & RPMFC_MODULE)
            xx = rpmfcHelper(fc, 'P', "perl");
        if (is_executable || (fc->fcolor->vals[fc->ix] & RPMFC_MODULE))
            xx = rpmfcHelper(fc, 'R', "perl");
    }
    if (fc->fcolor->vals[fc->ix] & RPMFC_PYTHON) {
        xx = rpmfcHelper(fc, 'P', "python");
#ifdef  NOTYET
        if (is_executable)
#endif
            xx = rpmfcHelper(fc, 'R', "python");
    }
    if (fc->fcolor->vals[fc->ix] & RPMFC_MONO) {
        xx = rpmfcHelper(fc, 'P', "mono");
        if (is_executable)
            xx = rpmfcHelper(fc, 'R', "mono");
    }

    return 0;
}

static int rpmfcELF(rpmfc fc)
        /*@globals rpmGlobalMacroContext, h_errno, fileSystem, internalState @*/
        /*@modifies fc, rpmGlobalMacroContext, fileSystem, internalState @*/
{
#if HAVE_GELF_H && HAVE_LIBELF
    const char * fn = fc->fn[fc->ix];
    Elf * elf;
    Elf_Scn * scn;
    Elf_Data * data;
    GElf_Ehdr ehdr_mem, * ehdr;
    GElf_Shdr shdr_mem, * shdr;
    GElf_Verdef def_mem, * def;
    GElf_Verneed need_mem, * need;
    GElf_Dyn dyn_mem, * dyn;
    unsigned int auxoffset;
    unsigned int offset;
    int fdno;
    int cnt2;
    int cnt;
    char buf[BUFSIZ];
    const char * s;
    struct stat sb, * st = &sb;
    const char * soname = NULL;
    rpmds * depsp, ds;
    int_32 tagN, dsContext;
    char * t;
    int xx;
    int isElf64;
    int isDSO;
    int gotSONAME = 0;
    int gotDEBUG = 0;
    int gotHASH = 0;
    int gotGNUHASH = 0;
    static int filter_GLIBC_PRIVATE = 0;
    static int oneshot = 0;

    if (oneshot == 0) {
        oneshot = 1;
        filter_GLIBC_PRIVATE = rpmExpandNumeric("%{?_filter_GLIBC_PRIVATE}");
    }

    /* Files with executable bit set only. */
    if (stat(fn, st) != 0)
        return(-1);

    fdno = open(fn, O_RDONLY);
    if (fdno < 0)
        return fdno;

    (void) elf_version(EV_CURRENT);

/*@-evalorder@*/
    elf = NULL;
    if ((elf = elf_begin (fdno, ELF_C_READ, NULL)) == NULL
     || elf_kind(elf) != ELF_K_ELF
     || (ehdr = gelf_getehdr(elf, &ehdr_mem)) == NULL
     || !(ehdr->e_type == ET_DYN || ehdr->e_type == ET_EXEC))
        goto exit;
/*@=evalorder@*/

    isElf64 = ehdr->e_ident[EI_CLASS] == ELFCLASS64;
    isDSO = ehdr->e_type == ET_DYN;

    /*@-branchstate -uniondef @*/
    scn = NULL;
    while ((scn = elf_nextscn(elf, scn)) != NULL) {
        shdr = gelf_getshdr(scn, &shdr_mem);
        if (shdr == NULL)
            break;

        soname = _free(soname);
        switch (shdr->sh_type) {
        default:
            continue;
            /*@notreached@*/ /*@switchbreak@*/ break;
        case SHT_GNU_verdef:
            data = NULL;
            if (!fc->skipProv)
            while ((data = elf_getdata (scn, data)) != NULL) {
                offset = 0;
                for (cnt = shdr->sh_info; --cnt >= 0; ) {
                
                    def = gelf_getverdef (data, offset, &def_mem);
                    if (def == NULL)
                        /*@innerbreak@*/ break;
                    auxoffset = offset + def->vd_aux;
                    for (cnt2 = def->vd_cnt; --cnt2 >= 0; ) {
                        GElf_Verdaux aux_mem, * aux;

                        aux = gelf_getverdaux (data, auxoffset, &aux_mem);
                        if (aux == NULL)
                            /*@innerbreak@*/ break;

                        s = elf_strptr(elf, shdr->sh_link, aux->vda_name);
                        if (s == NULL)
                            /*@innerbreak@*/ break;
                        if (def->vd_flags & VER_FLG_BASE) {
                            soname = _free(soname);
                            soname = xstrdup(s);
                            auxoffset += aux->vda_next;
                            /*@innercontinue@*/ continue;
                        } else
                        if (soname != NULL
                         && !(filter_GLIBC_PRIVATE != 0
                                && !strcmp(s, "GLIBC_PRIVATE")))
                        {
                            buf[0] = '\0';
                            t = buf;
                            t = stpcpy( stpcpy( stpcpy( stpcpy(t, soname), "("), s), ")");

#if !defined(__alpha__)
                            if (isElf64)
                                t = stpcpy(t, "(64bit)");
#endif
                            t++;

                            /* Add to package provides. */
                            ds = rpmdsSingle(RPMTAG_PROVIDES,
                                        buf, "", RPMSENSE_FIND_PROVIDES);
                            xx = rpmdsMerge(&fc->provides, ds);

                            /* Add to file dependencies. */
                            xx = rpmfcSaveArg(&fc->ddict,
                                        rpmfcFileDep(t, fc->ix, ds));

                            ds = rpmdsFree(ds);
                        }
                        auxoffset += aux->vda_next;
                    }
                    offset += def->vd_next;
                }
            }
            /*@switchbreak@*/ break;
        case SHT_GNU_verneed:
            data = NULL;
            /* Files with executable bit set only. */
            if (!fc->skipReq && (st->st_mode & (S_IXUSR|S_IXGRP|S_IXOTH)))
            while ((data = elf_getdata (scn, data)) != NULL) {
                offset = 0;
                for (cnt = shdr->sh_info; --cnt >= 0; ) {
                    need = gelf_getverneed (data, offset, &need_mem);
                    if (need == NULL)
                        /*@innerbreak@*/ break;

                    s = elf_strptr(elf, shdr->sh_link, need->vn_file);
                    if (s == NULL)
                        /*@innerbreak@*/ break;
                    soname = _free(soname);
                    soname = xstrdup(s);
                    auxoffset = offset + need->vn_aux;
                    for (cnt2 = need->vn_cnt; --cnt2 >= 0; ) {
                        GElf_Vernaux aux_mem, * aux;

                        aux = gelf_getvernaux (data, auxoffset, &aux_mem);
                        if (aux == NULL)
                            /*@innerbreak@*/ break;

                        s = elf_strptr(elf, shdr->sh_link, aux->vna_name);
                        if (s == NULL)
                            /*@innerbreak@*/ break;

                        /* Filter dependencies that contain GLIBC_PRIVATE */
                        if (soname != NULL
                         && !(filter_GLIBC_PRIVATE != 0
                                && !strcmp(s, "GLIBC_PRIVATE")))
                        {
                            buf[0] = '\0';
                            t = buf;
                            t = stpcpy( stpcpy( stpcpy( stpcpy(t, soname), "("), s), ")");

#if !defined(__alpha__)
                            if (isElf64)
                                t = stpcpy(t, "(64bit)");
#endif
                            t++;

                            /* Add to package dependencies. */
                            ds = rpmdsSingle(RPMTAG_REQUIRENAME,
                                        buf, "", RPMSENSE_FIND_REQUIRES);
                            xx = rpmdsMerge(&fc->requires, ds);

                            /* Add to file dependencies. */
                            xx = rpmfcSaveArg(&fc->ddict,
                                        rpmfcFileDep(t, fc->ix, ds));
                            ds = rpmdsFree(ds);
                        }
                        auxoffset += aux->vna_next;
                    }
                    offset += need->vn_next;
                }
            }
            /*@switchbreak@*/ break;
        case SHT_DYNAMIC:
            data = NULL;
            while ((data = elf_getdata (scn, data)) != NULL) {
/*@-boundswrite@*/
                for (cnt = 0; cnt < (shdr->sh_size / shdr->sh_entsize); ++cnt) {
                    dyn = gelf_getdyn (data, cnt, &dyn_mem);
                    if (dyn == NULL)
                        /*@innerbreak@*/ break;
                    s = NULL;
                    switch (dyn->d_tag) {
                    default:
                        /*@innercontinue@*/ continue;
                        /*@notreached@*/ /*@switchbreak@*/ break;
                    case DT_HASH:    
                        gotHASH= 1;
                        /*@innercontinue@*/ continue;
                    case DT_GNU_HASH:
                        gotGNUHASH= 1;
                        /*@innercontinue@*/ continue;
                    case DT_DEBUG:    
                        gotDEBUG = 1;
                        /*@innercontinue@*/ continue;
                    case DT_NEEDED:
                        /* Files with executable bit set only. */
                        if (fc->skipReq || !(st->st_mode & (S_IXUSR|S_IXGRP|S_IXOTH)))
                            /*@innercontinue@*/ continue;
                        /* Add to package requires. */
                        depsp = &fc->requires;
                        tagN = RPMTAG_REQUIRENAME;
                        dsContext = RPMSENSE_FIND_REQUIRES;
                        s = elf_strptr(elf, shdr->sh_link, dyn->d_un.d_val);
assert(s != NULL);
                        /*@switchbreak@*/ break;
                    case DT_SONAME:
                        gotSONAME = 1;
                        /* Add to package provides. */
                        if (fc->skipProv)
                            /*@innercontinue@*/ continue;
                        depsp = &fc->provides;
                        tagN = RPMTAG_PROVIDENAME;
                        dsContext = RPMSENSE_FIND_PROVIDES;
                        s = elf_strptr(elf, shdr->sh_link, dyn->d_un.d_val);
assert(s != NULL);
                        /*@switchbreak@*/ break;
                    }
                    if (s == NULL)
                        /*@innercontinue@*/ continue;

                    buf[0] = '\0';
                    t = buf;
                    t = stpcpy(t, s);

#if !defined(__alpha__)
                    if (isElf64)
                        t = stpcpy(t, "()(64bit)");
#endif
                    t++;

                    /* Add to package dependencies. */
                    ds = rpmdsSingle(tagN, buf, "", dsContext);
                    xx = rpmdsMerge(depsp, ds);

                    /* Add to file dependencies. */
                    xx = rpmfcSaveArg(&fc->ddict,
                                        rpmfcFileDep(t, fc->ix, ds));

                    ds = rpmdsFree(ds);
                }
/*@=boundswrite@*/
            }
            /*@switchbreak@*/ break;
        }
    }
    /*@=branchstate =uniondef @*/

    /* For DSOs which use the .gnu_hash section and don't have a .hash
     * section, we need to ensure that we have a new enough glibc. */ 
    if (gotGNUHASH && !gotHASH) {
        ds = rpmdsSingle(RPMTAG_REQUIRENAME, "rtld(GNU_HASH)", "", 
                         RPMSENSE_FIND_REQUIRES);
        rpmdsMerge(&fc->requires, ds);
        buf[0] = '\0';
        t = buf;
        rpmfcSaveArg(&fc->ddict, rpmfcFileDep(t, fc->ix, ds));
        ds = rpmdsFree(ds);
    }

    /* For DSO's, provide the basename of the file if DT_SONAME not found. */
    if (!fc->skipProv && isDSO && !gotDEBUG && !gotSONAME) {
        depsp = &fc->provides;
        tagN = RPMTAG_PROVIDENAME;
        dsContext = RPMSENSE_FIND_PROVIDES;

        s = strrchr(fn, '/');
        if (s)
            s++;
        else
            s = fn;

/*@-boundswrite@*/
        buf[0] = '\0';
        t = buf;
/*@-nullpass@*/ /* LCL: s is not null. */
        t = stpcpy(t, s);
/*@=nullpass@*/

#if !defined(__alpha__)
        if (isElf64)
            t = stpcpy(t, "()(64bit)");
#endif
/*@=boundswrite@*/
        t++;

        /* Add to package dependencies. */
        ds = rpmdsSingle(tagN, buf, "", dsContext);
        xx = rpmdsMerge(depsp, ds);

        /* Add to file dependencies. */
/*@-boundswrite@*/
        xx = rpmfcSaveArg(&fc->ddict, rpmfcFileDep(t, fc->ix, ds));
/*@=boundswrite@*/

        ds = rpmdsFree(ds);
    }

exit:
    soname = _free(soname);
    if (elf) (void) elf_end(elf);
    xx = close(fdno);
    return 0;
#else
    return -1;
#endif
}

typedef struct rpmfcApplyTbl_s {
    int (*func) (rpmfc fc);
    int colormask;
} * rpmfcApplyTbl;

/*@unchecked@*/
static struct rpmfcApplyTbl_s rpmfcApplyTable[] = {
    { rpmfcELF,         RPMFC_ELF },
    { rpmfcSCRIPT,      (RPMFC_SCRIPT|RPMFC_PERL) },
    { rpmfcSCRIPT,      (RPMFC_SCRIPT|RPMFC_PYTHON) },
    { rpmfcSCRIPT,      RPMFC_MONO },
    { rpmfcSYMLINK,     RPMFC_SYMLINK },
    { NULL, 0 }
};

int rpmfcApply(rpmfc fc)
{
    rpmfcApplyTbl fcat;
    const char * s;
    char * se;
    rpmds ds;
    const char * N;
    const char * EVR;
    int_32 Flags;
    unsigned char deptype;
    int nddict;
    int previx;
    unsigned int val;
    int dix;
    int ix;
    int i;
    int xx;
    int skipping;

    /* Generate package and per-file dependencies. */
    for (fc->ix = 0; fc->fn[fc->ix] != NULL; fc->ix++) {

        /* XXX Insure that /usr/lib{,64}/python files are marked RPMFC_PYTHON */
        /* XXX HACK: classification by path is intrinsically stupid. */
        {   const char *fn = strstr(fc->fn[fc->ix], "/usr/lib");
            if (fn) {
                fn += sizeof("/usr/lib")-1;
                if (fn[0] == '6' && fn[1] == '4')
                    fn += 2;
                if (!strncmp(fn, "/python", sizeof("/python")-1))
                    fc->fcolor->vals[fc->ix] |= RPMFC_PYTHON;
            }
        }

        if (fc->fcolor->vals[fc->ix])
        for (fcat = rpmfcApplyTable; fcat->func != NULL; fcat++) {
            if (!(fc->fcolor->vals[fc->ix] & fcat->colormask))
                /*@innercontinue@*/ continue;
            xx = (*fcat->func) (fc);
        }
    }

/*@-boundswrite@*/
    /* Generate per-file indices into package dependencies. */
    nddict = argvCount(fc->ddict);
    previx = -1;
    for (i = 0; i < nddict; i++) {
        s = fc->ddict[i];

        /* Parse out (file#,deptype,N,EVR,Flags) */
        ix = strtol(s, &se, 10);
assert(se != NULL);
        deptype = *se++;
        se++;
        N = se;
        while (*se && *se != ' ')
            se++;
        *se++ = '\0';
        EVR = se;
        while (*se && *se != ' ')
            se++;
        *se++ = '\0';
        Flags = strtol(se, NULL, 16);

        dix = -1;
        skipping = 0;
        switch (deptype) {
        default:
            /*@switchbreak@*/ break;
        case 'P':       
            skipping = fc->skipProv;
            ds = rpmdsSingle(RPMTAG_PROVIDENAME, N, EVR, Flags);
            dix = rpmdsFind(fc->provides, ds);
            ds = rpmdsFree(ds);
            /*@switchbreak@*/ break;
        case 'R':
            skipping = fc->skipReq;
            ds = rpmdsSingle(RPMTAG_REQUIRENAME, N, EVR, Flags);
            dix = rpmdsFind(fc->requires, ds);
            ds = rpmdsFree(ds);
            /*@switchbreak@*/ break;
        }

/* XXX assertion incorrect while generating -debuginfo deps. */
#if 0
assert(dix >= 0);
#else
        if (dix < 0)
            continue;
#endif

        val = (deptype << 24) | (dix & 0x00ffffff);
        xx = argiAdd(&fc->ddictx, -1, val);

        if (previx != ix) {
            previx = ix;
            xx = argiAdd(&fc->fddictx, ix, argiCount(fc->ddictx)-1);
        }
        if (fc->fddictn && fc->fddictn->vals && !skipping)
            fc->fddictn->vals[ix]++;
    }
/*@=boundswrite@*/

    return 0;
}

int rpmfcClassify(rpmfc fc, ARGV_t argv, int_16 * fmode)
{
    ARGV_t fcav = NULL;
    ARGV_t dav;
    const char * s, * se;
    size_t slen;
    int fcolor;
    int xx;
/*@observer@*/
    static const char * magicfile = "/usr/lib/rpm/magic";
    int msflags = MAGIC_CHECK;  /* XXX MAGIC_COMPRESS flag? */
    magic_t ms = NULL;

    if (fc == NULL || argv == NULL)
        return 0;

    fc->nfiles = argvCount(argv);

    /* Initialize the per-file dictionary indices. */
    xx = argiAdd(&fc->fddictx, fc->nfiles-1, 0);
    xx = argiAdd(&fc->fddictn, fc->nfiles-1, 0);

    /* Build (sorted) file class dictionary. */
    xx = argvAdd(&fc->cdict, "");
    xx = argvAdd(&fc->cdict, "directory");

    ms = magic_open(msflags);
    if (ms == NULL) {
        xx = RPMERR_EXEC;
        rpmError(xx, _("magic_open(0x%x) failed: %s\n"),
                msflags, strerror(errno));
assert(ms != NULL);     /* XXX figger a proper return path. */
    }

    xx = magic_load(ms, magicfile);
    if (xx == -1) {
        xx = RPMERR_EXEC;
        rpmError(xx, _("magic_load(ms, \"%s\") failed: %s\n"),
                magicfile, magic_error(ms));
assert(xx != -1);       /* XXX figger a proper return path. */
    }

    for (fc->ix = 0; fc->ix < fc->nfiles; fc->ix++) {
        const char * ftype;
        int_16 mode = (fmode ? fmode[fc->ix] : 0);
        char dbuf[1024];

        s = argv[fc->ix];
assert(s != NULL);
        slen = strlen(s);

        switch (mode & S_IFMT) {
        case S_IFCHR:   ftype = "character special";    break;
        case S_IFBLK:   ftype = "block special";        break;
        case S_IFIFO:   ftype = "fifo (named pipe)";    break;
        case S_IFSOCK:  ftype = "socket";               break;
        case S_IFDIR:
        case S_IFLNK:
        case S_IFREG:
        default:
            /* XXX all files with extension ".pm" are perl modules for now. */
/*@-branchstate@*/
            if (slen >= sizeof(".pm") && !strcmp(s+slen-(sizeof(".pm")-1), ".pm"))
                ftype = "Perl5 module source text";
            /* XXX skip all files in /dev/ which are (or should be) %dev dummies. */
            else if (slen >= fc->brlen+sizeof("/dev/") && !strncmp(s+fc->brlen, "/dev/", sizeof("/dev/")-1))
                ftype = "";
            else
                ftype = magic_file(ms, s);

            if (ftype == NULL) {
                xx = RPMERR_EXEC;
                rpmError(xx, _("magic_file(ms, \"%s\") failed: mode %06o %s\n"),
                        s, mode, magic_error(ms));
assert(ftype != NULL);  /* XXX figger a proper return path. */
            }
        }
/*@=branchstate@*/

        se = ftype;
        rpmMessage(RPMMESS_DEBUG, "%s: %s\n", s, se);

        /* Save the path. */
        xx = argvAdd(&fc->fn, s);

        /* Save the file type string. */
        xx = argvAdd(&fcav, se);

        /* Add (filtered) entry to sorted class dictionary. */
        fcolor = rpmfcColoring(se);
        xx = argiAdd(&fc->fcolor, fc->ix, fcolor);

/*@-boundswrite@*/
        if (fcolor != RPMFC_WHITE && (fcolor & RPMFC_INCLUDE))
            xx = rpmfcSaveArg(&fc->cdict, se);
/*@=boundswrite@*/
    }

    /* Build per-file class index array. */
    fc->fknown = 0;
    for (fc->ix = 0; fc->ix < fc->nfiles; fc->ix++) {
        se = fcav[fc->ix];
assert(se != NULL);

        dav = argvSearch(fc->cdict, se, NULL);
        if (dav) {
            xx = argiAdd(&fc->fcdictx, fc->ix, (dav - fc->cdict));
            fc->fknown++;
        } else {
            xx = argiAdd(&fc->fcdictx, fc->ix, 0);
            fc->fwhite++;
        }
    }

    fcav = argvFree(fcav);

    if (ms != NULL)
        magic_close(ms);

    return 0;
}

typedef struct DepMsg_s * DepMsg_t;

struct DepMsg_s {
/*@observer@*/ /*@null@*/
    const char * msg;
/*@observer@*/
    const char * argv[4];
    rpmTag ntag;
    rpmTag vtag;
    rpmTag ftag;
    int mask;
    int xor;
};

/*@unchecked@*/
static struct DepMsg_s depMsgs[] = {
  { "Provides",         { "%{?__find_provides}", NULL, NULL, NULL },
        RPMTAG_PROVIDENAME, RPMTAG_PROVIDEVERSION, RPMTAG_PROVIDEFLAGS,
        0, -1 },
#ifdef  DYING
  { "PreReq",           { NULL, NULL, NULL, NULL },
        RPMTAG_REQUIRENAME, RPMTAG_REQUIREVERSION, RPMTAG_REQUIREFLAGS,
        RPMSENSE_PREREQ, 0 },
  { "Requires(interp)", { NULL, "interp", NULL, NULL },
        -1, -1, RPMTAG_REQUIREFLAGS,
        _notpre(RPMSENSE_INTERP), 0 },
#else
  { "Requires(interp)", { NULL, "interp", NULL, NULL },
        RPMTAG_REQUIRENAME, RPMTAG_REQUIREVERSION, RPMTAG_REQUIREFLAGS,
        _notpre(RPMSENSE_INTERP), 0 },
#endif
  { "Requires(rpmlib)", { NULL, "rpmlib", NULL, NULL },
        -1, -1, RPMTAG_REQUIREFLAGS,
        _notpre(RPMSENSE_RPMLIB), 0 },
  { "Requires(verify)", { NULL, "verify", NULL, NULL },
        -1, -1, RPMTAG_REQUIREFLAGS,
        RPMSENSE_SCRIPT_VERIFY, 0 },
  { "Requires(pre)",    { NULL, "pre", NULL, NULL },
        -1, -1, RPMTAG_REQUIREFLAGS,
        _notpre(RPMSENSE_SCRIPT_PRE), 0 },
  { "Requires(post)",   { NULL, "post", NULL, NULL },
        -1, -1, RPMTAG_REQUIREFLAGS,
        _notpre(RPMSENSE_SCRIPT_POST), 0 },
  { "Requires(preun)",  { NULL, "preun", NULL, NULL },
        -1, -1, RPMTAG_REQUIREFLAGS,
        _notpre(RPMSENSE_SCRIPT_PREUN), 0 },
  { "Requires(postun)", { NULL, "postun", NULL, NULL },
        -1, -1, RPMTAG_REQUIREFLAGS,
        _notpre(RPMSENSE_SCRIPT_POSTUN), 0 },
  { "Requires",         { "%{?__find_requires}", NULL, NULL, NULL },
        -1, -1, RPMTAG_REQUIREFLAGS,    /* XXX inherit name/version arrays */
        RPMSENSE_PREREQ, RPMSENSE_PREREQ },
  { "Conflicts",        { "%{?__find_conflicts}", NULL, NULL, NULL },
        RPMTAG_CONFLICTNAME, RPMTAG_CONFLICTVERSION, RPMTAG_CONFLICTFLAGS,
        0, -1 },
  { "Obsoletes",        { "%{?__find_obsoletes}", NULL, NULL, NULL },
        RPMTAG_OBSOLETENAME, RPMTAG_OBSOLETEVERSION, RPMTAG_OBSOLETEFLAGS,
        0, -1 },
  { NULL,               { NULL, NULL, NULL, NULL },     0, 0, 0, 0, 0 }
};

/*@unchecked@*/
static DepMsg_t DepMsgs = depMsgs;

static void printDeps(Header h)
        /*@globals rpmGlobalMacroContext, h_errno, fileSystem, internalState @*/
        /*@modifies h, rpmGlobalMacroContext, fileSystem, internalState @*/
{
    DepMsg_t dm;
    rpmds ds = NULL;
    int flags = 0x2;    /* XXX no filtering, !scareMem */
    const char * DNEVR;
    int_32 Flags;
    int bingo = 0;

    for (dm = DepMsgs; dm->msg != NULL; dm++) {
        if (dm->ntag != -1) {
            ds = rpmdsFree(ds);
            ds = rpmdsNew(h, dm->ntag, flags);
        }
        if (dm->ftag == 0)
            continue;

        ds = rpmdsInit(ds);
        if (ds == NULL)
            continue;   /* XXX can't happen */

        bingo = 0;
        while (rpmdsNext(ds) >= 0) {

            Flags = rpmdsFlags(ds);
        
            if (!((Flags & dm->mask) ^ dm->xor))
                /*@innercontinue@*/ continue;
            if (bingo == 0) {
                rpmMessage(RPMMESS_NORMAL, "%s:", (dm->msg ? dm->msg : ""));
                bingo = 1;
            }
            if ((DNEVR = rpmdsDNEVR(ds)) == NULL)
                /*@innercontinue@*/ continue;   /* XXX can't happen */
            rpmMessage(RPMMESS_NORMAL, " %s", DNEVR+2);
        }
        if (bingo)
            rpmMessage(RPMMESS_NORMAL, "\n");
    }
    ds = rpmdsFree(ds);
}

static int rpmfcGenerateDependsHelper(const Spec spec, Package pkg, rpmfi fi)
        /*@globals rpmGlobalMacroContext, h_errno, fileSystem, internalState @*/
        /*@modifies fi, rpmGlobalMacroContext, fileSystem, internalState @*/
{
    StringBuf sb_stdin;
    StringBuf sb_stdout;
    DepMsg_t dm;
    int failnonzero = 0;
    int rc = 0;

    /*
     * Create file manifest buffer to deliver to dependency finder.
     */
    sb_stdin = newStringBuf();
    fi = rpmfiInit(fi, 0);
    if (fi != NULL)
    while (rpmfiNext(fi) >= 0)
        appendLineStringBuf(sb_stdin, rpmfiFN(fi));

    for (dm = DepMsgs; dm->msg != NULL; dm++) {
        int tag, tagflags;
        char * s;
        int xx;

        tag = (dm->ftag > 0) ? dm->ftag : dm->ntag;
        tagflags = 0;
        s = NULL;

        switch(tag) {
        case RPMTAG_PROVIDEFLAGS:
            if (!pkg->autoProv)
                continue;
            failnonzero = 1;
            tagflags = RPMSENSE_FIND_PROVIDES;
            /*@switchbreak@*/ break;
        case RPMTAG_REQUIREFLAGS:
            if (!pkg->autoReq)
                continue;
            failnonzero = 0;
            tagflags = RPMSENSE_FIND_REQUIRES;
            /*@switchbreak@*/ break;
        default:
            continue;
            /*@notreached@*/ /*@switchbreak@*/ break;
        }

/*@-boundswrite@*/
        xx = rpmfcExec(dm->argv, sb_stdin, &sb_stdout, failnonzero);
/*@=boundswrite@*/
        if (xx == -1)
            continue;

        s = rpmExpand(dm->argv[0], NULL);
        rpmMessage(RPMMESS_NORMAL, _("Finding  %s: %s\n"), dm->msg,
                (s ? s : ""));
        s = _free(s);

        if (sb_stdout == NULL) {
            rc = RPMERR_EXEC;
            rpmError(rc, _("Failed to find %s:\n"), dm->msg);
            break;
        }

        /* Parse dependencies into header */
        rc = parseRCPOT(spec, pkg, getStringBuf(sb_stdout), tag, 0, tagflags);
        sb_stdout = freeStringBuf(sb_stdout);

        if (rc) {
            rpmError(rc, _("Failed to find %s:\n"), dm->msg);
            break;
        }
    }

    sb_stdin = freeStringBuf(sb_stdin);

    return rc;
}

int rpmfcGenerateDepends(const Spec spec, Package pkg)
{
    rpmfi fi = pkg->cpioList;
    rpmfc fc = NULL;
    rpmds ds;
    int flags = 0x2;    /* XXX no filtering, !scareMem */
    ARGV_t av;
    int_16 * fmode;
    int ac = rpmfiFC(fi);
    const void ** p;
    char buf[BUFSIZ];
    const char * N;
    const char * EVR;
    int genConfigDeps;
    int c;
    int rc = 0;
    int xx;

    /* Skip packages with no files. */
    if (ac <= 0)
        return 0;

    /* Skip packages that have dependency generation disabled. */
    if (! (pkg->autoReq || pkg->autoProv))
        return 0;

    /* If new-fangled dependency generation is disabled ... */
    if (!rpmExpandNumeric("%{?_use_internal_dependency_generator}")) {
        /* ... then generate dependencies using %{__find_requires} et al. */
        rc = rpmfcGenerateDependsHelper(spec, pkg, fi);
        printDeps(pkg->header);
        return rc;
    }

    /* Extract absolute file paths in argv format. */
    av = xcalloc(ac+1, sizeof(*av));
    fmode = xcalloc(ac+1, sizeof(*fmode));

/*@-boundswrite@*/
    genConfigDeps = 0;
    fi = rpmfiInit(fi, 0);
    if (fi != NULL)
    while ((c = rpmfiNext(fi)) >= 0) {
        rpmfileAttrs fileAttrs;

        /* Does package have any %config files? */
        fileAttrs = rpmfiFFlags(fi);
        genConfigDeps |= (fileAttrs & RPMFILE_CONFIG);

        av[c] = xstrdup(rpmfiFN(fi));
        fmode[c] = rpmfiFMode(fi);
    }
    av[ac] = NULL;
/*@=boundswrite@*/

    fc = rpmfcNew();
    fc->skipProv = !pkg->autoProv;
    fc->skipReq = !pkg->autoReq;
    fc->tracked = 0;
    fc->brlen = (spec->buildRootURL ? strlen(spec->buildRootURL) : 0);

    /* Copy (and delete) manually generated dependencies to dictionary. */
    if (!fc->skipProv) {
        ds = rpmdsNew(pkg->header, RPMTAG_PROVIDENAME, flags);
        xx = rpmdsMerge(&fc->provides, ds);
        ds = rpmdsFree(ds);
        xx = headerRemoveEntry(pkg->header, RPMTAG_PROVIDENAME);
        xx = headerRemoveEntry(pkg->header, RPMTAG_PROVIDEVERSION);
        xx = headerRemoveEntry(pkg->header, RPMTAG_PROVIDEFLAGS);

        /* Add config dependency, Provides: config(N) = EVR */
        if (genConfigDeps) {
            N = rpmdsN(pkg->ds);
assert(N != NULL);
            EVR = rpmdsEVR(pkg->ds);
assert(EVR != NULL);
            sprintf(buf, "config(%s)", N);
            ds = rpmdsSingle(RPMTAG_PROVIDENAME, buf, EVR,
                        (RPMSENSE_EQUAL|RPMSENSE_CONFIG));
            xx = rpmdsMerge(&fc->provides, ds);
            ds = rpmdsFree(ds);
        }
    }

    if (!fc->skipReq) {
        ds = rpmdsNew(pkg->header, RPMTAG_REQUIRENAME, flags);
        xx = rpmdsMerge(&fc->requires, ds);
        ds = rpmdsFree(ds);
        xx = headerRemoveEntry(pkg->header, RPMTAG_REQUIRENAME);
        xx = headerRemoveEntry(pkg->header, RPMTAG_REQUIREVERSION);
        xx = headerRemoveEntry(pkg->header, RPMTAG_REQUIREFLAGS);

        /* Add config dependency,  Requires: config(N) = EVR */
        if (genConfigDeps) {
            N = rpmdsN(pkg->ds);
assert(N != NULL);
            EVR = rpmdsEVR(pkg->ds);
assert(EVR != NULL);
            sprintf(buf, "config(%s)", N);
            ds = rpmdsSingle(RPMTAG_REQUIRENAME, buf, EVR,
                        (RPMSENSE_EQUAL|RPMSENSE_CONFIG));
            xx = rpmdsMerge(&fc->requires, ds);
            ds = rpmdsFree(ds);
        }
    }

    /* Build file class dictionary. */
    xx = rpmfcClassify(fc, av, fmode);

    /* Build file/package dependency dictionary. */
    xx = rpmfcApply(fc);

    /* Add per-file colors(#files) */
    p = (const void **) argiData(fc->fcolor);
    c = argiCount(fc->fcolor);
assert(ac == c);
    if (p != NULL && c > 0) {
        int_32 * fcolors = (int_32 *)p;
        int i;

        /* XXX Make sure only primary (i.e. Elf32/Elf64) colors are added. */
        for (i = 0; i < c; i++)
            fcolors[i] &= 0x0f;
        xx = headerAddEntry(pkg->header, RPMTAG_FILECOLORS, RPM_INT32_TYPE,
                        p, c);
    }

    /* Add classes(#classes) */
    p = (const void **) argvData(fc->cdict);
    c = argvCount(fc->cdict);
    if (p != NULL && c > 0)
        xx = headerAddEntry(pkg->header, RPMTAG_CLASSDICT, RPM_STRING_ARRAY_TYPE,
                        p, c);

    /* Add per-file classes(#files) */
    p = (const void **) argiData(fc->fcdictx);
    c = argiCount(fc->fcdictx);
assert(ac == c);
    if (p != NULL && c > 0)
        xx = headerAddEntry(pkg->header, RPMTAG_FILECLASS, RPM_INT32_TYPE,
                        p, c);

    /* Add Provides: */
/*@-branchstate@*/
    if (fc->provides != NULL && (c = rpmdsCount(fc->provides)) > 0 && !fc->skipProv) {
        p = (const void **) fc->provides->N;
        xx = headerAddEntry(pkg->header, RPMTAG_PROVIDENAME, RPM_STRING_ARRAY_TYPE,
                        p, c);
        /* XXX rpm prior to 3.0.2 did not always supply EVR and Flags. */
/*@-nullpass@*/
        p = (const void **) fc->provides->EVR;
assert(p != NULL);
        xx = headerAddEntry(pkg->header, RPMTAG_PROVIDEVERSION, RPM_STRING_ARRAY_TYPE,
                        p, c);
        p = (const void **) fc->provides->Flags;
assert(p != NULL);
        xx = headerAddEntry(pkg->header, RPMTAG_PROVIDEFLAGS, RPM_INT32_TYPE,
                        p, c);
/*@=nullpass@*/
    }
/*@=branchstate@*/

    /* Add Requires: */
/*@-branchstate@*/
    if (fc->requires != NULL && (c = rpmdsCount(fc->requires)) > 0 && !fc->skipReq) {
        p = (const void **) fc->requires->N;
        xx = headerAddEntry(pkg->header, RPMTAG_REQUIRENAME, RPM_STRING_ARRAY_TYPE,
                        p, c);
        /* XXX rpm prior to 3.0.2 did not always supply EVR and Flags. */
/*@-nullpass@*/
        p = (const void **) fc->requires->EVR;
assert(p != NULL);
        xx = headerAddEntry(pkg->header, RPMTAG_REQUIREVERSION, RPM_STRING_ARRAY_TYPE,
                        p, c);
        p = (const void **) fc->requires->Flags;
assert(p != NULL);
        xx = headerAddEntry(pkg->header, RPMTAG_REQUIREFLAGS, RPM_INT32_TYPE,
                        p, c);
/*@=nullpass@*/
    }
/*@=branchstate@*/

    /* Add dependency dictionary(#dependencies) */
    p = (const void **) argiData(fc->ddictx);
    c = argiCount(fc->ddictx);
    if (p != NULL)
        xx = headerAddEntry(pkg->header, RPMTAG_DEPENDSDICT, RPM_INT32_TYPE,
                        p, c);

    /* Add per-file dependency (start,number) pairs (#files) */
    p = (const void **) argiData(fc->fddictx);
    c = argiCount(fc->fddictx);
assert(ac == c);
    if (p != NULL)
        xx = headerAddEntry(pkg->header, RPMTAG_FILEDEPENDSX, RPM_INT32_TYPE,
                        p, c);

    p = (const void **) argiData(fc->fddictn);
    c = argiCount(fc->fddictn);
assert(ac == c);
    if (p != NULL)
        xx = headerAddEntry(pkg->header, RPMTAG_FILEDEPENDSN, RPM_INT32_TYPE,
                        p, c);

    printDeps(pkg->header);

if (fc != NULL && _rpmfc_debug) {
char msg[BUFSIZ];
sprintf(msg, "final: files %d cdict[%d] %d%% ddictx[%d]", fc->nfiles, argvCount(fc->cdict), ((100 * fc->fknown)/fc->nfiles), argiCount(fc->ddictx));
rpmfcPrint(msg, fc, NULL);
}

    /* Clean up. */
    fmode = _free(fmode);
    fc = rpmfcFree(fc);
    av = argvFree(av);

    return rc;
}

---