From cbffab246997fb5a06211dfb706b54e5ae5bb59f Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:58:51 +0200 Subject: Adding upstream version 1.21.22. Signed-off-by: Daniel Baumann --- src/split/info.c | 291 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 291 insertions(+) create mode 100644 src/split/info.c (limited to 'src/split/info.c') diff --git a/src/split/info.c b/src/split/info.c new file mode 100644 index 0000000..73fbd69 --- /dev/null +++ b/src/split/info.c @@ -0,0 +1,291 @@ +/* + * dpkg-split - splitting and joining of multipart *.deb archives + * info.c - information about split archives + * + * Copyright © 1995 Ian Jackson + * Copyright © 2008-2012 Guillem Jover + * + * This is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include + +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "dpkg-split.h" + +static intmax_t +parse_intmax(const char *value, const char *fn, const char *what) +{ + intmax_t r; + char *endp; + + errno = 0; + r = strtoimax(value, &endp, 10); + if (value == endp || *endp) + ohshit(_("file '%.250s' is corrupt - bad digit (code %d) in %s"), + fn, *endp, what); + if (r < 0 || errno == ERANGE) + ohshit(_("file '%s' is corrupt; out of range integer in %s"), fn, what); + return r; +} + +static char *nextline(char **ripp, const char *fn, const char *what) { + char *newline, *rip; + + rip= *ripp; + if (!rip) + ohshit(_("file '%.250s' is corrupt - %.250s missing"), fn, what); + newline= strchr(rip,'\n'); + if (!newline) + ohshit(_("file '%.250s' is corrupt - missing newline after %.250s"), + fn, what); + *ripp= newline+1; + + str_rtrim_spaces(rip, newline); + + return rip; +} + +/** + * Read a deb-split part archive. + * + * @return Part info (nfmalloc'd) if was an archive part and we read it, + * NULL if it wasn't. + */ +struct partinfo * +read_info(struct dpkg_ar *ar, struct partinfo *ir) +{ + static char *readinfobuf= NULL; + static size_t readinfobuflen= 0; + + size_t thisilen; + intmax_t templong; + char magicbuf[sizeof(DPKG_AR_MAGIC) - 1], *rip, *partnums, *slash; + const char *err; + struct dpkg_ar_hdr arh; + ssize_t rc; + + rc = fd_read(ar->fd, magicbuf, sizeof(magicbuf)); + if (rc != sizeof(magicbuf)) { + if (rc < 0) + ohshite(_("error reading %.250s"), ar->name); + else + return NULL; + } + if (memcmp(magicbuf, DPKG_AR_MAGIC, sizeof(magicbuf))) + return NULL; + + rc = fd_read(ar->fd, &arh, sizeof(arh)); + if (rc != sizeof(arh)) + read_fail(rc, ar->name, "ar header"); + + dpkg_ar_normalize_name(&arh); + + if (strncmp(arh.ar_name, PARTMAGIC, sizeof(arh.ar_name)) != 0) + return NULL; + if (dpkg_ar_member_is_illegal(&arh)) + ohshit(_("file '%.250s' is corrupt - bad magic at end of first header"), + ar->name); + thisilen = dpkg_ar_member_get_size(ar, &arh); + if (thisilen >= readinfobuflen) { + readinfobuflen = thisilen + 2; + readinfobuf= m_realloc(readinfobuf,readinfobuflen); + } + rc = fd_read(ar->fd, readinfobuf, thisilen + (thisilen & 1)); + if (rc != (ssize_t)(thisilen + (thisilen & 1))) + read_fail(rc, ar->name, "reading header member"); + if (thisilen & 1) { + int c = readinfobuf[thisilen]; + + if (c != '\n') + ohshit(_("file '%.250s' is corrupt - bad padding character (code %d)"), + ar->name, c); + } + readinfobuf[thisilen] = '\0'; + if (memchr(readinfobuf,0,thisilen)) + ohshit(_("file '%.250s' is corrupt - nulls in info section"), ar->name); + + ir->filename = ar->name; + + rip= readinfobuf; + err = deb_version_parse(&ir->fmtversion, + nextline(&rip, ar->name, _("format version number"))); + if (err) + ohshit(_("file '%.250s' has invalid format version: %s"), ar->name, err); + if (ir->fmtversion.major != 2) + ohshit(_("file '%.250s' is format version %d.%d; get a newer dpkg-split"), + ar->name, ir->fmtversion.major, ir->fmtversion.minor); + + ir->package = nfstrsave(nextline(&rip, ar->name, _("package name"))); + ir->version = nfstrsave(nextline(&rip, ar->name, _("package version number"))); + ir->md5sum = nfstrsave(nextline(&rip, ar->name, _("package file MD5 checksum"))); + if (strlen(ir->md5sum) != MD5HASHLEN || + strspn(ir->md5sum, "0123456789abcdef") != MD5HASHLEN) + ohshit(_("file '%.250s' is corrupt - bad MD5 checksum '%.250s'"), + ar->name, ir->md5sum); + + ir->orglength = parse_intmax(nextline(&rip, ar->name, _("archive total size")), + ar->name, _("archive total size")); + ir->maxpartlen = parse_intmax(nextline(&rip, ar->name, _("archive part offset")), + ar->name, _("archive part offset")); + + partnums = nextline(&rip, ar->name, _("archive part numbers")); + slash= strchr(partnums,'/'); + if (!slash) + ohshit(_("file '%.250s' is corrupt - no slash between archive part numbers"), ar->name); + *slash++ = '\0'; + + templong = parse_intmax(slash, ar->name, _("number of archive parts")); + if (templong <= 0 || templong > INT_MAX) + ohshit(_("file '%.250s' is corrupt - bad number of archive parts"), ar->name); + ir->maxpartn= templong; + templong = parse_intmax(partnums, ar->name, _("archive parts number")); + if (templong <= 0 || templong > ir->maxpartn) + ohshit(_("file '%.250s' is corrupt - bad archive part number"), ar->name); + ir->thispartn= templong; + + /* If the package was created with dpkg 1.16.1 or later it will include + * the architecture. */ + if (*rip != '\0') + ir->arch = nfstrsave(nextline(&rip, ar->name, _("package architecture"))); + else + ir->arch = NULL; + + rc = fd_read(ar->fd, &arh, sizeof(arh)); + if (rc != sizeof(arh)) + read_fail(rc, ar->name, "reading data part member ar header"); + + dpkg_ar_normalize_name(&arh); + + if (dpkg_ar_member_is_illegal(&arh)) + ohshit(_("file '%.250s' is corrupt - bad magic at end of second header"), + ar->name); + if (strncmp(arh.ar_name,"data",4)) + ohshit(_("file '%.250s' is corrupt - second member is not data member"), + ar->name); + + ir->thispartlen = dpkg_ar_member_get_size(ar, &arh); + ir->thispartoffset= (ir->thispartn-1)*ir->maxpartlen; + + if (ir->maxpartn != (ir->orglength+ir->maxpartlen-1)/ir->maxpartlen) + ohshit(_("file '%.250s' is corrupt - wrong number of parts for quoted sizes"), + ar->name); + if (ir->thispartlen != + (ir->thispartn == ir->maxpartn + ? ir->orglength - ir->thispartoffset : ir->maxpartlen)) + ohshit(_("file '%.250s' is corrupt - size is wrong for quoted part number"), + ar->name); + + ir->filesize = (strlen(DPKG_AR_MAGIC) + + sizeof(arh) + thisilen + (thisilen & 1) + + sizeof(arh) + ir->thispartlen + (ir->thispartlen & 1)); + + if (S_ISREG(ar->mode)) { + /* Don't do this check if it's coming from a pipe or something. It's + * only an extra sanity check anyway. */ + if (ar->size < ir->filesize) + ohshit(_("file '%.250s' is corrupt - too short"), ar->name); + } + + ir->headerlen = strlen(DPKG_AR_MAGIC) + + sizeof(arh) + thisilen + (thisilen & 1) + sizeof(arh); + + return ir; +} + +void mustgetpartinfo(const char *filename, struct partinfo *ri) { + struct dpkg_ar *part; + + part = dpkg_ar_open(filename); + if (!part) + ohshite(_("cannot open archive part file '%.250s'"), filename); + if (!read_info(part, ri)) + ohshite(_("file '%.250s' is not an archive part"), filename); + dpkg_ar_close(part); +} + +void print_info(const struct partinfo *pi) { + printf(_("%s:\n" + " Part format version: %d.%d\n" + " Part of package: %s\n" + " ... version: %s\n" + " ... architecture: %s\n" + " ... MD5 checksum: %s\n" + " ... length: %jd bytes\n" + " ... split every: %jd bytes\n" + " Part number: %d/%d\n" + " Part length: %jd bytes\n" + " Part offset: %jd bytes\n" + " Part file size (used portion): %jd bytes\n\n"), + pi->filename, + pi->fmtversion.major, pi->fmtversion.minor, + pi->package, + pi->version, + pi->arch ? pi->arch : C_("architecture", ""), + pi->md5sum, + (intmax_t)pi->orglength, + (intmax_t)pi->maxpartlen, + pi->thispartn, + pi->maxpartn, + (intmax_t)pi->thispartlen, + (intmax_t)pi->thispartoffset, + (intmax_t)pi->filesize); +} + +int +do_info(const char *const *argv) +{ + const char *thisarg; + struct partinfo *pi, ps; + struct dpkg_ar *part; + + if (!*argv) + badusage(_("--%s requires one or more part file arguments"), + cipaction->olong); + + while ((thisarg= *argv++)) { + part = dpkg_ar_open(thisarg); + if (!part) + ohshite(_("cannot open archive part file '%.250s'"), thisarg); + pi = read_info(part, &ps); + dpkg_ar_close(part); + if (pi) { + print_info(pi); + } else { + printf(_("file '%s' is not an archive part\n"), thisarg); + } + m_output(stdout, _("")); + } + + return 0; +} -- cgit v1.2.3