diff options
Diffstat (limited to 'rpml.c')
| -rw-r--r-- | rpml.c | 204 |
1 files changed, 204 insertions, 0 deletions
@@ -0,0 +1,204 @@ +/* + * Copyright (c) 2004 Michael Schroeder (mls@suse.de) + * + * This program is licensed under the BSD license, read LICENSE.BSD + * for further information + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <sys/stat.h> + +#include "rpml.h" +#include "util.h" +#include "rpmhead.h" + +/**************************************************************** + * + * rpml + * + */ + +static int +rpmlget16(FILE *fp) +{ + int r; + r = getc(fp); + r = r << 8 | getc(fp); + return r; +} + +static int +rpmlget32(FILE *fp) +{ + int r; + r = getc(fp); + r = r << 8 | getc(fp); + r = r << 8 | getc(fp); + r = r << 8 | getc(fp); + return r; +} + +static char * +rpmlgetstr(FILE *fp) +{ + int l; + char *s, *s2; + + l = getc(fp); + s = s2 = xmalloc(l + 2); + while(l-- > 0) + *s2++ = getc(fp); + *s2 = 0; + return s; +} + +static void +rpmlskip(FILE *fp, int l) +{ + while(l-- > 0) + (void)getc(fp); +} + +static char * +rpmlgetfn(FILE *fp, char **lastfnp, int *lastfnlp) +{ + int ol, l; + char *n; + char *lastfn = *lastfnp; + int lastfnl = *lastfnlp; + + ol = getc(fp); + if (ol == EOF) + { + fprintf(stderr, "rpmlgetfn: EOF reached!\n"); + exit(1); + } + l = getc(fp); + if (l == 255) + l = rpmlget16(fp); + if (l + ol + 1 > lastfnl) + { + lastfn = xrealloc(lastfn, l + ol + 1); + lastfnl = l + ol + 1; + } + n = lastfn + ol; + while(l-- > 0) + *n++ = getc(fp); + *n = 0; + *lastfnp = lastfn; + *lastfnlp = lastfnl; + return lastfn; +} + +char * +rpmlread(FILE *fp, char *fn, int nomagic, struct rpmlfile **filesp, int *nfilesp) +{ + int lastfnl = 0; + char *lastfn = 0; + char *n, *name, *evr, *nevr; + char *buildhost; + unsigned int buildtime; + int patchescnt, filec, i; + struct rpmlfile *files = 0; + int nfiles = 0; + unsigned int mode, s, ogs; + + if (!nomagic && rpmlget32(fp) != 0x52504d4c) + { + fprintf(stderr, "%s: not an rpml file\n", fn); + exit(1); + } + name = rpmlgetstr(fp); + evr = rpmlgetstr(fp); + nevr = xmalloc(strlen(name) + strlen(evr) + 2); + sprintf(nevr, "%s-%s", name, evr); + buildhost = rpmlgetstr(fp); + buildtime = rpmlget32(fp); + patchescnt = rpmlget16(fp); + xfree(name); + xfree(evr); + xfree(buildhost); + if (patchescnt) + { + for (i = 0; i < patchescnt; i++) + rpmlgetstr(fp); + filec = rpmlget32(fp); + for (i = 0; i < filec; i++) + { + if ((nfiles & 15) == 0) + files = xrealloc(files, (nfiles + 16) * sizeof(*files)); + n = rpmlgetfn(fp, &lastfn, &lastfnl); + files[nfiles].name = xmalloc(strlen(n) + 1); + strcpy(files[nfiles].name, n); + files[nfiles].mode = S_IFREG; + files[nfiles].fflags = FILE_UNPATCHED; + memset(files[nfiles].md5, 0, 16); + nfiles++; + } + } + for (;;) + { + n = rpmlgetfn(fp, &lastfn, &lastfnl); + if (!*n) + break; + if ((nfiles & 15) == 0) + files = xrealloc(files, (nfiles + 16) * sizeof(*files)); + if (*n == '.' && n[1] == '/') + n += 2; + files[nfiles].name = xmalloc(strlen(n) + 1); + strcpy(files[nfiles].name, n); + files[nfiles].fflags = 0; + memset(files[nfiles].md5, 0, 16); + mode = rpmlget16(fp); + files[nfiles].mode = mode; + if (mode == 0) /* hard link chain */ + { + nfiles++; + continue; + } + ogs = getc(fp); + if (ogs == 0xff) + { + unsigned int ogs2; + ogs2 = getc(fp); + ogs = getc(fp); + if (ogs2) + rpmlskip(fp, ogs2 + 1); + if (ogs & 0xfc) + rpmlskip(fp, (ogs >> 2 & 0x3f) + 1); + } + else + { + if (ogs & 0xe0) + rpmlskip(fp, (ogs >> 5 & 7) + 1); + if (ogs & 0x1c) + rpmlskip(fp, (ogs >> 2 & 7) + 1); + } + if (S_ISCHR(mode) || S_ISBLK(mode)) + rpmlget32(fp); /* rdev */ + if (S_ISREG(mode) || S_ISLNK(mode)) + { + ogs &= 3; + s = 0; + if (ogs > 2) + s |= getc(fp) << 24; + if (ogs > 1) + s |= getc(fp) << 16; + if (ogs > 0) + s |= getc(fp) << 8; + s |= getc(fp); + if (s) + { + for (s = 0; s < 16; s++) + files[nfiles].md5[s] = getc(fp); + } + } + nfiles++; + } + *filesp = files; + *nfilesp = nfiles; + return nevr; +} |