rdate: make it do something remotely sane, facing 32-bit time overflow
[oweals/busybox.git] / archival / rpm.c
index 380226f9b9370cde1620241498bf1d2d55fe2c68..83160f975eaecd5671cb3c0628cce1f9e9bc4f1e 100644 (file)
@@ -7,8 +7,30 @@
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
+//config:config RPM
+//config:      bool "rpm"
+//config:      default y
+//config:      help
+//config:        Mini RPM applet - queries and extracts RPM packages.
+
+//applet:IF_RPM(APPLET(rpm, BB_DIR_BIN, BB_SUID_DROP))
+//kbuild:lib-$(CONFIG_RPM) += rpm.o
+
+//usage:#define rpm_trivial_usage
+//usage:       "-i PACKAGE.rpm; rpm -qp[ildc] PACKAGE.rpm"
+//usage:#define rpm_full_usage "\n\n"
+//usage:       "Manipulate RPM packages\n"
+//usage:     "\nCommands:"
+//usage:     "\n       -i      Install package"
+//usage:     "\n       -qp     Query package"
+//usage:     "\n       -qpi    Show information"
+//usage:     "\n       -qpl    List contents"
+//usage:     "\n       -qpd    List documents"
+//usage:     "\n       -qpc    List config files"
+
 #include "libbb.h"
-#include "archive.h"
+#include "common_bufsiz.h"
+#include "bb_archive.h"
 #include "rpm.h"
 
 #define RPM_CHAR_TYPE           1
@@ -67,136 +89,13 @@ typedef struct {
        uint32_t count; /* 4 byte count */
 } rpm_index;
 
-static void *map;
-static rpm_index **mytags;
-static int tagcount;
-
-static void extract_cpio(int fd, const char *source_rpm);
-static rpm_index **rpm_gettags(int fd, int *num_tags);
-static int bsearch_rpmtag(const void *key, const void *item);
-static char *rpm_getstr(int tag, int itemindex);
-static int rpm_getint(int tag, int itemindex);
-static int rpm_getcount(int tag);
-static void fileaction_dobackup(char *filename, int fileref);
-static void fileaction_setowngrp(char *filename, int fileref);
-static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref));
-
-int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int rpm_main(int argc, char **argv)
-{
-       int opt = 0, func = 0, rpm_fd, offset;
-       const int pagesize = getpagesize();
-
-       while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
-               switch (opt) {
-               case 'i': /* First arg: Install mode, with q: Information */
-                       if (!func) func = rpm_install;
-                       else func |= rpm_query_info;
-                       break;
-               case 'q': /* First arg: Query mode */
-                       if (func) bb_show_usage();
-                       func = rpm_query;
-                       break;
-               case 'p': /* Query a package */
-                       func |= rpm_query_package;
-                       break;
-               case 'l': /* List files in a package */
-                       func |= rpm_query_list;
-                       break;
-               case 'd': /* List doc files in a package (implies list) */
-                       func |= rpm_query_list;
-                       func |= rpm_query_list_doc;
-                       break;
-               case 'c': /* List config files in a package (implies list) */
-                       func |= rpm_query_list;
-                       func |= rpm_query_list_config;
-                       break;
-               default:
-                       bb_show_usage();
-               }
-       }
-       argv += optind;
-       //argc -= optind;
-       if (!argv[0]) {
-               bb_show_usage();
-       }
-
-       while (*argv) {
-               const char *source_rpm;
-
-               rpm_fd = xopen(*argv++, O_RDONLY);
-               mytags = rpm_gettags(rpm_fd, &tagcount);
-               if (!mytags)
-                       bb_error_msg_and_die("error reading rpm header");
-               offset = xlseek(rpm_fd, 0, SEEK_CUR);
-               /* Mimimum is one page */
-               map = mmap(0, offset > pagesize ? (offset + offset % pagesize) : pagesize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
-
-               source_rpm = rpm_getstr(TAG_SOURCERPM, 0);
-
-               if (func & rpm_install) {
-                       /* Backup any config files */
-                       loop_through_files(TAG_BASENAMES, fileaction_dobackup);
-                       /* Extact the archive */
-                       extract_cpio(rpm_fd, source_rpm);
-                       /* Set the correct file uid/gid's */
-                       loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
-               }
-               else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) {
-                       if (!(func & (rpm_query_info|rpm_query_list))) {
-                               /* If just a straight query, just give package name */
-                               printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
-                       }
-                       if (func & rpm_query_info) {
-                               /* Do the nice printout */
-                               time_t bdate_time;
-                               struct tm *bdate_ptm;
-                               char bdatestring[50];
-                               const char *p;
-
-                               p = rpm_getstr(TAG_PREFIXS, 0);
-                               if (!p) p = "(not relocateable)";
-                               printf("Name        : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), p);
-                               p = rpm_getstr(TAG_VENDOR, 0);
-                               if (!p) p = "(none)";
-                               printf("Version     : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), p);
-                               bdate_time = rpm_getint(TAG_BUILDTIME, 0);
-                               bdate_ptm = localtime(&bdate_time);
-                               strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm);
-                               printf("Release     : %-30sBuild Date: %s\n", rpm_getstr(TAG_RELEASE, 0), bdatestring);
-                               printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstr(TAG_BUILDHOST, 0));
-                               printf("Group       : %-30sSource RPM: %s\n", rpm_getstr(TAG_GROUP, 0), source_rpm);
-                               printf("Size        : %-33dLicense: %s\n", rpm_getint(TAG_SIZE, 0), rpm_getstr(TAG_LICENSE, 0));
-                               printf("URL         : %s\n", rpm_getstr(TAG_URL, 0));
-                               printf("Summary     : %s\n", rpm_getstr(TAG_SUMMARY, 0));
-                               printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
-                       }
-                       if (func & rpm_query_list) {
-                               int count, it, flags;
-                               count = rpm_getcount(TAG_BASENAMES);
-                               for (it = 0; it < count; it++) {
-                                       flags = rpm_getint(TAG_FILEFLAGS, it);
-                                       switch (func & (rpm_query_list_doc|rpm_query_list_config)) {
-                                       case rpm_query_list_doc:
-                                               if (!(flags & RPMFILE_DOC)) continue;
-                                               break;
-                                       case rpm_query_list_config:
-                                               if (!(flags & RPMFILE_CONFIG)) continue;
-                                               break;
-                                       case rpm_query_list_doc|rpm_query_list_config:
-                                               if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue;
-                                               break;
-                                       }
-                                       printf("%s%s\n",
-                                               rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
-                                               rpm_getstr(TAG_BASENAMES, it));
-                               }
-                       }
-               }
-               free(mytags);
-       }
-       return 0;
-}
+struct globals {
+       void *map;
+       rpm_index **mytags;
+       int tagcount;
+} FIX_ALIASING;
+#define G (*(struct globals*)bb_common_bufsiz1)
+#define INIT_G() do { setup_common_bufsiz(); } while (0)
 
 static void extract_cpio(int fd, const char *source_rpm)
 {
@@ -219,12 +118,12 @@ static void extract_cpio(int fd, const char *source_rpm)
                /* compat: overwrite existing files.
                 * try "rpm -i foo.src.rpm" few times in a row -
                 * standard rpm will not complain.
-                * (TODO? real rpm creates "file;1234" and then renames it) */
-               | ARCHIVE_UNLINK_OLD;
+                */
+               | ARCHIVE_REPLACE_VIA_RENAME;
        archive_handle->src_fd = fd;
        /*archive_handle->offset = 0; - init_handle() did it */
 
-       setup_unzip_on_fd(archive_handle->src_fd /*, fail_if_not_detected: 1*/);
+       setup_unzip_on_fd(archive_handle->src_fd, /*fail_if_not_compressed:*/ 1);
        while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
                continue;
 }
@@ -282,7 +181,7 @@ static int bsearch_rpmtag(const void *key, const void *item)
 static int rpm_getcount(int tag)
 {
        rpm_index **found;
-       found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
+       found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
        if (!found)
                return 0;
        return found[0]->count;
@@ -291,7 +190,7 @@ static int rpm_getcount(int tag)
 static char *rpm_getstr(int tag, int itemindex)
 {
        rpm_index **found;
-       found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
+       found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
        if (!found || itemindex >= found[0]->count)
                return NULL;
        if (found[0]->type == RPM_STRING_TYPE
@@ -299,7 +198,7 @@ static char *rpm_getstr(int tag, int itemindex)
         || found[0]->type == RPM_STRING_ARRAY_TYPE
        ) {
                int n;
-               char *tmpstr = (char *) map + found[0]->offset;
+               char *tmpstr = (char *) G.map + found[0]->offset;
                for (n = 0; n < itemindex; n++)
                        tmpstr = tmpstr + strlen(tmpstr) + 1;
                return tmpstr;
@@ -310,32 +209,25 @@ static char *rpm_getstr(int tag, int itemindex)
 static int rpm_getint(int tag, int itemindex)
 {
        rpm_index **found;
-       int *tmpint; /* NB: using int8_t* would be easier to code */
+       char *tmpint;
 
        /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
         * it's ok to ignore it because tag won't be used as a pointer */
-       found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
+       found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
        if (!found || itemindex >= found[0]->count)
                return -1;
 
-       tmpint = (int *) ((char *) map + found[0]->offset);
-
+       tmpint = (char *) G.map + found[0]->offset;
        if (found[0]->type == RPM_INT32_TYPE) {
-               tmpint = (int *) ((char *) tmpint + itemindex*4);
-               /*return ntohl(*tmpint);*/
-               /* int can be != int32_t */
+               tmpint += itemindex*4;
                return ntohl(*(int32_t*)tmpint);
        }
        if (found[0]->type == RPM_INT16_TYPE) {
-               tmpint = (int *) ((char *) tmpint + itemindex*2);
-               /* ??? read int, and THEN ntohs() it?? */
-               /*return ntohs(*tmpint);*/
+               tmpint += itemindex*2;
                return ntohs(*(int16_t*)tmpint);
        }
        if (found[0]->type == RPM_INT8_TYPE) {
-               tmpint = (int *) ((char *) tmpint + itemindex);
-               /* ??? why we don't read byte here??? */
-               /*return ntohs(*tmpint);*/
+               tmpint += itemindex;
                return *(int8_t*)tmpint;
        }
        return -1;
@@ -380,3 +272,134 @@ static void loop_through_files(int filetag, void (*fileaction)(char *filename, i
                free(filename);
        }
 }
+
+int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int rpm_main(int argc, char **argv)
+{
+       int opt, func = 0;
+       const unsigned pagesize = getpagesize();
+
+       while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
+               switch (opt) {
+               case 'i': /* First arg: Install mode, with q: Information */
+                       if (!func) func = rpm_install;
+                       else func |= rpm_query_info;
+                       break;
+               case 'q': /* First arg: Query mode */
+                       if (func) bb_show_usage();
+                       func = rpm_query;
+                       break;
+               case 'p': /* Query a package */
+                       func |= rpm_query_package;
+                       break;
+               case 'l': /* List files in a package */
+                       func |= rpm_query_list;
+                       break;
+               case 'd': /* List doc files in a package (implies list) */
+                       func |= rpm_query_list;
+                       func |= rpm_query_list_doc;
+                       break;
+               case 'c': /* List config files in a package (implies list) */
+                       func |= rpm_query_list;
+                       func |= rpm_query_list_config;
+                       break;
+               default:
+                       bb_show_usage();
+               }
+       }
+       argv += optind;
+       //argc -= optind;
+       if (!argv[0]) {
+               bb_show_usage();
+       }
+
+       while (*argv) {
+               int rpm_fd;
+               unsigned mapsize;
+               const char *source_rpm;
+
+               rpm_fd = xopen(*argv++, O_RDONLY);
+               G.mytags = rpm_gettags(rpm_fd, &G.tagcount);
+               if (!G.mytags)
+                       bb_error_msg_and_die("error reading rpm header");
+               mapsize = xlseek(rpm_fd, 0, SEEK_CUR);
+               mapsize = (mapsize + pagesize) & -(int)pagesize;
+               /* Some NOMMU systems prefer MAP_PRIVATE over MAP_SHARED */
+               G.map = mmap(0, mapsize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
+//FIXME: error check?
+
+               source_rpm = rpm_getstr(TAG_SOURCERPM, 0);
+
+               if (func & rpm_install) {
+                       /* Backup any config files */
+                       loop_through_files(TAG_BASENAMES, fileaction_dobackup);
+                       /* Extact the archive */
+                       extract_cpio(rpm_fd, source_rpm);
+                       /* Set the correct file uid/gid's */
+                       loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
+               }
+               else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) {
+                       if (!(func & (rpm_query_info|rpm_query_list))) {
+                               /* If just a straight query, just give package name */
+                               printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
+                       }
+                       if (func & rpm_query_info) {
+                               /* Do the nice printout */
+                               time_t bdate_time;
+                               struct tm *bdate_ptm;
+                               char bdatestring[50];
+                               const char *p;
+
+                               printf("%-12s: %s\n", "Name"        , rpm_getstr(TAG_NAME, 0));
+                               /* TODO compat: add "Epoch" here */
+                               printf("%-12s: %s\n", "Version"     , rpm_getstr(TAG_VERSION, 0));
+                               printf("%-12s: %s\n", "Release"     , rpm_getstr(TAG_RELEASE, 0));
+                               /* add "Architecture" */
+                               printf("%-12s: %s\n", "Install Date", "(not installed)");
+                               printf("%-12s: %s\n", "Group"       , rpm_getstr(TAG_GROUP, 0));
+                               printf("%-12s: %d\n", "Size"        , rpm_getint(TAG_SIZE, 0));
+                               printf("%-12s: %s\n", "License"     , rpm_getstr(TAG_LICENSE, 0));
+                               /* add "Signature" */
+                               printf("%-12s: %s\n", "Source RPM"  , source_rpm ? source_rpm : "(none)");
+                               bdate_time = rpm_getint(TAG_BUILDTIME, 0);
+                               bdate_ptm = localtime(&bdate_time);
+                               strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm);
+                               printf("%-12s: %s\n", "Build Date"  , bdatestring);
+                               printf("%-12s: %s\n", "Build Host"  , rpm_getstr(TAG_BUILDHOST, 0));
+                               p = rpm_getstr(TAG_PREFIXS, 0);
+                               printf("%-12s: %s\n", "Relocations" , p ? p : "(not relocatable)");
+                               /* add "Packager" */
+                               p = rpm_getstr(TAG_VENDOR, 0);
+                               printf("%-12s: %s\n", "Vendor"      , p ? p : "(none)");
+                               printf("%-12s: %s\n", "URL"         , rpm_getstr(TAG_URL, 0));
+                               printf("%-12s: %s\n", "Summary"     , rpm_getstr(TAG_SUMMARY, 0));
+                               printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
+                       }
+                       if (func & rpm_query_list) {
+                               int count, it, flags;
+                               count = rpm_getcount(TAG_BASENAMES);
+                               for (it = 0; it < count; it++) {
+                                       flags = rpm_getint(TAG_FILEFLAGS, it);
+                                       switch (func & (rpm_query_list_doc|rpm_query_list_config)) {
+                                       case rpm_query_list_doc:
+                                               if (!(flags & RPMFILE_DOC)) continue;
+                                               break;
+                                       case rpm_query_list_config:
+                                               if (!(flags & RPMFILE_CONFIG)) continue;
+                                               break;
+                                       case rpm_query_list_doc|rpm_query_list_config:
+                                               if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue;
+                                               break;
+                                       }
+                                       printf("%s%s\n",
+                                               rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
+                                               rpm_getstr(TAG_BASENAMES, it));
+                               }
+                       }
+               }
+               munmap(G.map, mapsize);
+               free(G.mytags);
+               close(rpm_fd);
+       }
+       return 0;
+}