diff options
Diffstat (limited to 'security/nss/lib/jar/jarfile.c')
| -rw-r--r-- | security/nss/lib/jar/jarfile.c | 1149 |
1 files changed, 0 insertions, 1149 deletions
diff --git a/security/nss/lib/jar/jarfile.c b/security/nss/lib/jar/jarfile.c deleted file mode 100644 index 5f5b0e67f..000000000 --- a/security/nss/lib/jar/jarfile.c +++ /dev/null @@ -1,1149 +0,0 @@ -/* - * The contents of this file are subject to the Mozilla Public - * License Version 1.1 (the "License"); you may not use this file - * except in compliance with the License. You may obtain a copy of - * the License at http://www.mozilla.org/MPL/ - * - * Software distributed under the License is distributed on an "AS - * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or - * implied. See the License for the specific language governing - * rights and limitations under the License. - * - * The Original Code is the Netscape security libraries. - * - * The Initial Developer of the Original Code is Netscape - * Communications Corporation. Portions created by Netscape are - * Copyright (C) 1994-2000 Netscape Communications Corporation. All - * Rights Reserved. - * - * Contributor(s): - * - * Alternatively, the contents of this file may be used under the - * terms of the GNU General Public License Version 2 or later (the - * "GPL"), in which case the provisions of the GPL are applicable - * instead of those above. If you wish to allow use of your - * version of this file only under the terms of the GPL and not to - * allow others to use your version of this file under the MPL, - * indicate your decision by deleting the provisions above and - * replace them with the notice and other provisions required by - * the GPL. If you do not delete the provisions above, a recipient - * may use your version of this file under either the MPL or the - * GPL. - */ - -/* - * JARFILE - * - * Parsing of a Jar file - */ - -#define JAR_SIZE 256 - -#include "jar.h" - -#include "jarint.h" -#include "jarfile.h" - -/* commercial compression */ -#include "jzlib.h" - -#ifdef XP_UNIX -#include "sys/stat.h" -#endif - - -/* extracting */ - -static int jar_guess_jar (char *filename, JAR_FILE fp); - -static int jar_inflate_memory - (unsigned int method, long *length, long expected_out_len, char ZHUGEP **data); - -static int jar_physical_extraction - (JAR_FILE fp, char *outpath, long offset, long length); - -static int jar_physical_inflate - (JAR_FILE fp, char *outpath, long offset, - long length, unsigned int method); - -static int jar_verify_extract - (JAR *jar, char *path, char *physical_path); - -static JAR_Physical *jar_get_physical (JAR *jar, char *pathname); - -static int jar_extract_manifests (JAR *jar, jarArch format, JAR_FILE fp); - -static int jar_extract_mf (JAR *jar, jarArch format, JAR_FILE fp, char *ext); - - -/* indexing */ - -static int jar_gen_index (JAR *jar, jarArch format, JAR_FILE fp); - -static int jar_listtar (JAR *jar, JAR_FILE fp); - -static int jar_listzip (JAR *jar, JAR_FILE fp); - - -/* conversions */ - -static int dosdate (char *date, char *s); - -static int dostime (char *time, char *s); - -static unsigned int xtoint (unsigned char *ii); - -static unsigned long xtolong (unsigned char *ll); - -static long atoo (char *s); - -/* - * J A R _ p a s s _ a r c h i v e - * - * For use by naive clients. Slam an entire archive file - * into this function. We extract manifests, parse, index - * the archive file, and do whatever nastiness. - * - */ - -int JAR_pass_archive - (JAR *jar, jarArch format, char *filename, const char *url) - { - JAR_FILE fp; - int status = 0; - - if (filename == NULL) - return JAR_ERR_GENERAL; - - if ((fp = JAR_FOPEN (filename, "rb")) != NULL) - { - if (format == jarArchGuess) - format = (jarArch)jar_guess_jar (filename, fp); - - jar->format = format; - jar->url = url ? PORT_Strdup (url) : NULL; - jar->filename = PORT_Strdup (filename); - - status = jar_gen_index (jar, format, fp); - - if (status == 0) - status = jar_extract_manifests (jar, format, fp); - - JAR_FCLOSE (fp); - - if (status < 0) - return status; - - /* people were expecting it this way */ - return jar->valid; - } - else - { - /* file not found */ - return JAR_ERR_FNF; - } - } - -/* - * J A R _ p a s s _ a r c h i v e _ u n v e r i f i e d - * - * Same as JAR_pass_archive, but doesn't parse signatures. - * - */ -int JAR_pass_archive_unverified - (JAR *jar, jarArch format, char *filename, const char *url) -{ - JAR_FILE fp; - int status = 0; - - if (filename == NULL) { - return JAR_ERR_GENERAL; - } - - if ((fp = JAR_FOPEN (filename, "rb")) != NULL) { - if (format == jarArchGuess) { - format = (jarArch)jar_guess_jar (filename, fp); - } - - jar->format = format; - jar->url = url ? PORT_Strdup (url) : NULL; - jar->filename = PORT_Strdup (filename); - - status = jar_gen_index (jar, format, fp); - - if (status == 0) { - status = jar_extract_mf(jar, format, fp, "mf"); - } - - JAR_FCLOSE (fp); - - if (status < 0) { - return status; - } - - /* people were expecting it this way */ - return jar->valid; - } else { - /* file not found */ - return JAR_ERR_FNF; - } -} - -/* - * J A R _ v e r i f i e d _ e x t r a c t - * - * Optimization: keep a file descriptor open - * inside the JAR structure, so we don't have to - * open the file 25 times to run java. - * - */ - -int JAR_verified_extract - (JAR *jar, char *path, char *outpath) - { - int status; - - status = JAR_extract (jar, path, outpath); - - if (status >= 0) - return jar_verify_extract (jar, path, outpath); - else - return status; - } - -int JAR_extract - (JAR *jar, char *path, char *outpath) - { - int result; - - JAR_FILE fp; - JAR_Physical *phy; - - if (jar->fp == NULL && jar->filename) - { - jar->fp = (FILE*)JAR_FOPEN (jar->filename, "rb"); - } - - if (jar->fp == NULL) - { - /* file not found */ - return JAR_ERR_FNF; - } - - phy = jar_get_physical (jar, path); - - if (phy) - { - if (phy->compression != 0 && phy->compression != 8) - { - /* unsupported compression method */ - result = JAR_ERR_CORRUPT; - } - - if (phy->compression == 0) - { - result = jar_physical_extraction - ((PRFileDesc*)jar->fp, outpath, phy->offset, phy->length); - } - else - { - result = jar_physical_inflate - ((PRFileDesc*)jar->fp, outpath, phy->offset, phy->length, - (unsigned int) phy->compression); - } - -#ifdef XP_UNIX - if (phy->mode) - chmod (outpath, 0400 | (mode_t) phy->mode); -#endif - } - else - { - /* pathname not found in archive */ - result = JAR_ERR_PNF; - } - - return result; - } - -/* - * p h y s i c a l _ e x t r a c t i o n - * - * This needs to be done in chunks of say 32k, instead of - * in one bulk calloc. (Necessary under Win16 platform.) - * This is done for uncompressed entries only. - * - */ - -#define CHUNK 32768 - -static int jar_physical_extraction - (JAR_FILE fp, char *outpath, long offset, long length) - { - JAR_FILE out; - - char *buffer; - long at, chunk; - - int status = 0; - - buffer = (char *) PORT_ZAlloc (CHUNK); - - if (buffer == NULL) - return JAR_ERR_MEMORY; - - if ((out = JAR_FOPEN (outpath, "wb")) != NULL) - { - at = 0; - - JAR_FSEEK (fp, offset, (PRSeekWhence)0); - - while (at < length) - { - chunk = (at + CHUNK <= length) ? CHUNK : length - at; - - if (JAR_FREAD (fp, buffer, chunk) != chunk) - { - status = JAR_ERR_DISK; - break; - } - - at += chunk; - - if (JAR_FWRITE (out, buffer, chunk) < chunk) - { - /* most likely a disk full error */ - status = JAR_ERR_DISK; - break; - } - } - JAR_FCLOSE (out); - } - else - { - /* error opening output file */ - status = JAR_ERR_DISK; - } - - PORT_Free (buffer); - return status; - } - -/* - * j a r _ p h y s i c a l _ i n f l a t e - * - * Inflate a range of bytes in a file, writing the inflated - * result to "outpath". Chunk based. - * - */ - -/* input and output chunks differ, assume 4x compression */ - -#define ICHUNK 8192 -#define OCHUNK 32768 - -static int jar_physical_inflate - (JAR_FILE fp, char *outpath, long offset, - long length, unsigned int method) - { - z_stream zs; - - JAR_FILE out; - - long at, chunk; - char *inbuf, *outbuf; - - int status = 0; - - unsigned long prev_total, ochunk, tin; - - if ((inbuf = (char *) PORT_ZAlloc (ICHUNK)) == NULL) - return JAR_ERR_MEMORY; - - if ((outbuf = (char *) PORT_ZAlloc (OCHUNK)) == NULL) - { - PORT_Free (inbuf); - return JAR_ERR_MEMORY; - } - - PORT_Memset (&zs, 0, sizeof (zs)); - status = inflateInit2 (&zs, -MAX_WBITS); - - if (status != Z_OK) - return JAR_ERR_GENERAL; - - if ((out = JAR_FOPEN (outpath, "wb")) != NULL) - { - at = 0; - - JAR_FSEEK (fp, offset, (PRSeekWhence)0); - - while (at < length) - { - chunk = (at + ICHUNK <= length) ? ICHUNK : length - at; - - if (JAR_FREAD (fp, inbuf, chunk) != chunk) - { - /* incomplete read */ - return JAR_ERR_CORRUPT; - } - - at += chunk; - - zs.next_in = (Bytef *) inbuf; - zs.avail_in = chunk; - zs.avail_out = OCHUNK; - - tin = zs.total_in; - - while ((zs.total_in - tin < chunk) || (zs.avail_out == 0)) - { - prev_total = zs.total_out; - - zs.next_out = (Bytef *) outbuf; - zs.avail_out = OCHUNK; - - status = inflate (&zs, Z_NO_FLUSH); - - if (status != Z_OK && status != Z_STREAM_END) - { - /* error during decompression */ - return JAR_ERR_CORRUPT; - } - - ochunk = zs.total_out - prev_total; - - if (JAR_FWRITE (out, outbuf, ochunk) < ochunk) - { - /* most likely a disk full error */ - status = JAR_ERR_DISK; - break; - } - - if (status == Z_STREAM_END) - break; - } - } - - JAR_FCLOSE (out); - status = inflateEnd (&zs); - } - else - { - /* error opening output file */ - status = JAR_ERR_DISK; - } - - PORT_Free (inbuf); - PORT_Free (outbuf); - - return status; - } - -/* - * j a r _ i n f l a t e _ m e m o r y - * - * Call zlib to inflate the given memory chunk. It is re-XP_ALLOC'd, - * and thus appears to operate inplace to the caller. - * - */ - -static int jar_inflate_memory - (unsigned int method, long *length, long expected_out_len, char ZHUGEP **data) - { - int status; - z_stream zs; - - long insz, outsz; - - char *inbuf, *outbuf; - - inbuf = *data; - insz = *length; - - outsz = expected_out_len; - outbuf = (char*)PORT_ZAlloc (outsz); - - if (outbuf == NULL) - return JAR_ERR_MEMORY; - - PORT_Memset (&zs, 0, sizeof (zs)); - - status = inflateInit2 (&zs, -MAX_WBITS); - - if (status < 0) - { - /* error initializing zlib stream */ - return JAR_ERR_GENERAL; - } - - zs.next_in = (Bytef *) inbuf; - zs.next_out = (Bytef *) outbuf; - - zs.avail_in = insz; - zs.avail_out = outsz; - - status = inflate (&zs, Z_FINISH); - - if (status != Z_OK && status != Z_STREAM_END) - { - /* error during deflation */ - return JAR_ERR_GENERAL; - } - - status = inflateEnd (&zs); - - if (status != Z_OK) - { - /* error during deflation */ - return JAR_ERR_GENERAL; - } - - PORT_Free (*data); - - *data = outbuf; - *length = zs.total_out; - - return 0; - } - -/* - * v e r i f y _ e x t r a c t - * - * Validate signature on the freshly extracted file. - * - */ - -static int jar_verify_extract (JAR *jar, char *path, char *physical_path) - { - int status; - JAR_Digest dig; - - PORT_Memset (&dig, 0, sizeof (JAR_Digest)); - status = JAR_digest_file (physical_path, &dig); - - if (!status) - status = JAR_verify_digest (jar, path, &dig); - - return status; - } - -/* - * g e t _ p h y s i c a l - * - * Let's get physical. - * Obtains the offset and length of this file in the jar file. - * - */ - -static JAR_Physical *jar_get_physical (JAR *jar, char *pathname) - { - JAR_Item *it; - - JAR_Physical *phy; - - ZZLink *link; - ZZList *list; - - list = jar->phy; - - if (ZZ_ListEmpty (list)) - return NULL; - - for (link = ZZ_ListHead (list); - !ZZ_ListIterDone (list, link); - link = link->next) - { - it = link->thing; - if (it->type == jarTypePhy - && it->pathname && !PORT_Strcmp (it->pathname, pathname)) - { - phy = (JAR_Physical *) it->data; - return phy; - } - } - - return NULL; - } - -/* - * j a r _ e x t r a c t _ m a n i f e s t s - * - * Extract the manifest files and parse them, - * from an open archive file whose contents are known. - * - */ - -static int jar_extract_manifests (JAR *jar, jarArch format, JAR_FILE fp) - { - int status; - - if (format != jarArchZip && format != jarArchTar) - return JAR_ERR_CORRUPT; - - if ((status = jar_extract_mf (jar, format, fp, "mf")) < 0) - return status; - - if ((status = jar_extract_mf (jar, format, fp, "sf")) < 0) - return status; - - if ((status = jar_extract_mf (jar, format, fp, "rsa")) < 0) - return status; - - if ((status = jar_extract_mf (jar, format, fp, "dsa")) < 0) - return status; - - return 0; - } - -/* - * j a r _ e x t r a c t _ m f - * - * Extracts manifest files based on an extension, which - * should be .MF, .SF, .RSA, etc. Order of the files is now no - * longer important when zipping jar files. - * - */ - -static int jar_extract_mf (JAR *jar, jarArch format, JAR_FILE fp, char *ext) - { - JAR_Item *it; - - JAR_Physical *phy; - - ZZLink *link; - ZZList *list; - - char *fn, *e; - char ZHUGEP *manifest; - - long length; - int status, ret = 0, num; - - list = jar->phy; - - if (ZZ_ListEmpty (list)) - return JAR_ERR_PNF; - - for (link = ZZ_ListHead (list); - !ZZ_ListIterDone (list, link); - link = link->next) - { - it = link->thing; - if (it->type == jarTypePhy - && !PORT_Strncmp (it->pathname, "META-INF", 8)) - { - phy = (JAR_Physical *) it->data; - - if (PORT_Strlen (it->pathname) < 8) - continue; - - fn = it->pathname + 8; - if (*fn == '/' || *fn == '\\') fn++; - - if (*fn == 0) - { - /* just a directory entry */ - continue; - } - - /* skip to extension */ - for (e = fn; *e && *e != '.'; e++) - /* yip */ ; - - /* and skip dot */ - if (*e == '.') e++; - - if (PORT_Strcasecmp (ext, e)) - { - /* not the right extension */ - continue; - } - - if (phy->length == 0) - { - /* manifest files cannot be zero length! */ - return JAR_ERR_CORRUPT; - } - - /* Read in the manifest and parse it */ - /* FIX? Does this break on win16 for very very large manifest files? */ - -#ifdef XP_WIN16 - PORT_Assert( phy->length+1 < 0xFFFF ); -#endif - - manifest = (char ZHUGEP *) PORT_ZAlloc (phy->length + 1); - if (manifest) - { - JAR_FSEEK (fp, phy->offset, (PRSeekWhence)0); - num = JAR_FREAD (fp, manifest, phy->length); - - if (num != phy->length) - { - /* corrupt archive file */ - return JAR_ERR_CORRUPT; - } - - if (phy->compression == 8) - { - length = phy->length; - - status = jar_inflate_memory ((unsigned int) phy->compression, &length, phy->uncompressed_length, &manifest); - - if (status < 0) - return status; - } - else if (phy->compression) - { - /* unsupported compression method */ - return JAR_ERR_CORRUPT; - } - else - length = phy->length; - - status = JAR_parse_manifest - (jar, manifest, length, it->pathname, "url"); - - PORT_Free (manifest); - - if (status < 0 && ret == 0) ret = status; - } - else - return JAR_ERR_MEMORY; - } - else if (it->type == jarTypePhy) - { - /* ordinary file */ - } - } - - return ret; - } - -/* - * j a r _ g e n _ i n d e x - * - * Generate an index for the various types of - * known archive files. Right now .ZIP and .TAR - * - */ - -static int jar_gen_index (JAR *jar, jarArch format, JAR_FILE fp) - { - int result = JAR_ERR_CORRUPT; - JAR_FSEEK (fp, 0, (PRSeekWhence)0); - - switch (format) - { - case jarArchZip: - result = jar_listzip (jar, fp); - break; - - case jarArchTar: - result = jar_listtar (jar, fp); - break; - } - - JAR_FSEEK (fp, 0, (PRSeekWhence)0); - return result; - } - - -/* - * j a r _ l i s t z i p - * - * List the physical contents of a Phil Katz - * style .ZIP file into the JAR linked list. - * - */ - -static int jar_listzip (JAR *jar, JAR_FILE fp) - { - int err = 0; - - long pos = 0L; - char filename [JAR_SIZE]; - - char date [9], time [9]; - char sig [4]; - - unsigned int compression; - unsigned int filename_len, extra_len; - - struct ZipLocal *Local; - struct ZipCentral *Central; - struct ZipEnd *End; - - /* phy things */ - - ZZLink *ent; - JAR_Item *it; - JAR_Physical *phy; - - Local = (struct ZipLocal *) PORT_ZAlloc (30); - Central = (struct ZipCentral *) PORT_ZAlloc (46); - End = (struct ZipEnd *) PORT_ZAlloc (22); - - if (!Local || !Central || !End) - { - /* out of memory */ - err = JAR_ERR_MEMORY; - goto loser; - } - - while (1) - { - JAR_FSEEK (fp, pos, (PRSeekWhence)0); - - if (JAR_FREAD (fp, (char *) sig, 4) != 4) - { - /* zip file ends prematurely */ - err = JAR_ERR_CORRUPT; - goto loser; - } - - JAR_FSEEK (fp, pos, (PRSeekWhence)0); - - if (xtolong ((unsigned char *)sig) == LSIG) - { - JAR_FREAD (fp, (char *) Local, 30); - - filename_len = xtoint ((unsigned char *) Local->filename_len); - extra_len = xtoint ((unsigned char *) Local->extrafield_len); - - if (filename_len >= JAR_SIZE) - { - /* corrupt zip file */ - err = JAR_ERR_CORRUPT; - goto loser; - } - - if (JAR_FREAD (fp, filename, filename_len) != filename_len) - { - /* truncated archive file */ - err = JAR_ERR_CORRUPT; - goto loser; - } - - filename [filename_len] = 0; - - /* Add this to our jar chain */ - - phy = (JAR_Physical *) PORT_ZAlloc (sizeof (JAR_Physical)); - - if (phy == NULL) - { - err = JAR_ERR_MEMORY; - goto loser; - } - - /* We will index any file that comes our way, but when it comes - to actually extraction, compression must be 0 or 8 */ - - compression = xtoint ((unsigned char *) Local->method); - phy->compression = compression >= 0 && - compression <= 255 ? compression : 222; - - phy->offset = pos + 30 + filename_len + extra_len; - phy->length = xtolong ((unsigned char *) Local->size); - phy->uncompressed_length = xtolong((unsigned char *) Local->orglen); - - dosdate (date, Local->date); - dostime (time, Local->time); - - it = (JAR_Item*)PORT_ZAlloc (sizeof (JAR_Item)); - if (it == NULL) - { - err = JAR_ERR_MEMORY; - goto loser; - } - - it->pathname = PORT_Strdup (filename); - - it->type = jarTypePhy; - - it->data = (unsigned char *) phy; - it->size = sizeof (JAR_Physical); - - ent = ZZ_NewLink (it); - - if (ent == NULL) - { - err = JAR_ERR_MEMORY; - goto loser; - } - - ZZ_AppendLink (jar->phy, ent); - - pos = phy->offset + phy->length; - } - else if (xtolong ( (unsigned char *)sig) == CSIG) - { - if (JAR_FREAD (fp, (char *) Central, 46) != 46) - { - /* apparently truncated archive */ - err = JAR_ERR_CORRUPT; - goto loser; - } - -#ifdef XP_UNIX - /* with unix we need to locate any bits from - the protection mask in the external attributes. */ - { - unsigned int attr; - - /* determined empirically */ - attr = Central->external_attributes [2]; - - if (attr) - { - /* we have to read the filename, again */ - - filename_len = xtoint ((unsigned char *) Central->filename_len); - - if (filename_len >= JAR_SIZE) - { - /* corrupt in central directory */ - err = JAR_ERR_CORRUPT; - goto loser; - } - - if (JAR_FREAD (fp, filename, filename_len) != filename_len) - { - /* truncated in central directory */ - err = JAR_ERR_CORRUPT; - goto loser; - } - - filename [filename_len] = 0; - - /* look up this name again */ - phy = jar_get_physical (jar, filename); - - if (phy) - { - /* always allow access by self */ - phy->mode = 0400 | attr; - } - } - } -#endif - - pos += 46 + xtoint ( (unsigned char *)Central->filename_len) - + xtoint ( (unsigned char *)Central->commentfield_len) - + xtoint ( (unsigned char *)Central->extrafield_len); - } - else if (xtolong ( (unsigned char *)sig) == ESIG) - { - if (JAR_FREAD (fp, (char *) End, 22) != 22) - { - err = JAR_ERR_CORRUPT; - goto loser; - } - else - break; - } - else - { - /* garbage in archive */ - err = JAR_ERR_CORRUPT; - goto loser; - } - } - -loser: - - if (Local) PORT_Free (Local); - if (Central) PORT_Free (Central); - if (End) PORT_Free (End); - - return err; - } - -/* - * j a r _ l i s t t a r - * - * List the physical contents of a Unix - * .tar file into the JAR linked list. - * - */ - -static int jar_listtar (JAR *jar, JAR_FILE fp) - { - long pos = 0L; - - long sz, mode; - time_t when; - union TarEntry tarball; - - char *s; - - /* phy things */ - - ZZLink *ent; - JAR_Item *it; - JAR_Physical *phy; - - while (1) - { - JAR_FSEEK (fp, pos, (PRSeekWhence)0); - - if (JAR_FREAD (fp, (char *) &tarball, 512) < 512) - break; - - if (!*tarball.val.filename) - break; - - when = atoo (tarball.val.time); - sz = atoo (tarball.val.size); - mode = atoo (tarball.val.mode); - - - /* Tag the end of filename */ - - s = tarball.val.filename; - while (*s && *s != ' ') s++; - *s = 0; - - - /* Add to our linked list */ - - phy = (JAR_Physical *) PORT_ZAlloc (sizeof (JAR_Physical)); - - if (phy == NULL) - return JAR_ERR_MEMORY; - - phy->compression = 0; - phy->offset = pos + 512; - phy->length = sz; - - ADDITEM (jar->phy, jarTypePhy, - tarball.val.filename, phy, sizeof (JAR_Physical)); - - - /* Advance to next file entry */ - - sz += 511; - sz = (sz / 512) * 512; - - pos += sz + 512; - } - - return 0; - } - -/* - * d o s d a t e - * - * Not used right now, but keep it in here because - * it will be needed. - * - */ - -static int dosdate (char *date, char *s) - { - int num = xtoint ( (unsigned char *)s); - - PR_snprintf (date, 9, "%02d-%02d-%02d", - ((num >> 5) & 0x0F), (num & 0x1F), ((num >> 9) + 80)); - - return 0; - } - -/* - * d o s t i m e - * - * Not used right now, but keep it in here because - * it will be needed. - * - */ - -static int dostime (char *time, char *s) - { - int num = xtoint ( (unsigned char *)s); - - PR_snprintf (time, 6, "%02d:%02d", - ((num >> 11) & 0x1F), ((num >> 5) & 0x3F)); - - return 0; - } - -/* - * x t o i n t - * - * Converts a two byte ugly endianed integer - * to our platform's integer. - * - */ - -static unsigned int xtoint (unsigned char *ii) - { - return (int) (ii [0]) | ((int) ii [1] << 8); - } - -/* - * x t o l o n g - * - * Converts a four byte ugly endianed integer - * to our platform's integer. - * - */ - -static unsigned long xtolong (unsigned char *ll) - { - unsigned long ret; - - ret = ( - (((unsigned long) ll [0]) << 0) | - (((unsigned long) ll [1]) << 8) | - (((unsigned long) ll [2]) << 16) | - (((unsigned long) ll [3]) << 24) - ); - - return ret; - } - -/* - * a t o o - * - * Ascii octal to decimal. - * Used for integer encoding inside tar files. - * - */ - -static long atoo (char *s) - { - long num = 0L; - - while (*s == ' ') s++; - - while (*s >= '0' && *s <= '7') - { - num <<= 3; - num += *s++ - '0'; - } - - return num; - } - -/* - * g u e s s _ j a r - * - * Try to guess what kind of JAR file this is. - * Maybe tar, maybe zip. Look in the file for magic - * or at its filename. - * - */ - -static int jar_guess_jar (char *filename, JAR_FILE fp) - { - char *ext; - - ext = filename + PORT_Strlen (filename) - 4; - - if (!PORT_Strcmp (ext, ".tar")) - return jarArchTar; - - return jarArchZip; - } |