From 72686d316d4e9bdfa949ea7e4c9311ae9202144f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andrius=20=C5=A0tikonas?= <andrius@stikonas.eu>
Date: Wed, 12 Jan 2022 10:24:03 +0000
Subject: [PATCH] add forgotten files.

---
 app-arch/fastjar/Manifest                   |   1 +
 app-arch/fastjar/files/0.98-traversal.patch | 112 ++++++++++++++++++++
 2 files changed, 113 insertions(+)
 create mode 100644 app-arch/fastjar/files/0.98-traversal.patch

diff --git a/app-arch/fastjar/Manifest b/app-arch/fastjar/Manifest
index 81d4572..7885e15 100644
--- a/app-arch/fastjar/Manifest
+++ b/app-arch/fastjar/Manifest
@@ -1,2 +1,3 @@
+AUX 0.98-traversal.patch 3010 BLAKE2B 76450d561450aa9c7d5386f53328c0037d6ce9df2d6aac79deb1e47cee7651723cf2863a0d27cb6431a58525a9d0d3c554820b4f22a3099d1fe43b2ea7bec0d1 SHA512 7bfcfebd681f9556e8231786da3326d12ee7ab071e2cadf9a4c17ba4e4e750aeb7e3d7cd78634c36e05179df4a369aae2e04a22533d1954668ada95f1d53d311
 DIST fastjar-0.98.tar.gz 717984 BLAKE2B 1715f1917076799fc58c6c6cea8fb53fc3261a694fa2392c0dc6e30101a7d42de0c5c55cd593627b4d2d0ffa45e3d44ef220c9579caec669721c6b1b9996e43c SHA512 c0f9fca7b58d6acd00b90a5184dbde9ba3ffc5bf4d69512743e450649a272baf1f6af98b15d79d2b53990eaf84ef402c986035e6b615a19e35ed424348143903
 EBUILD fastjar-0.98-r3.ebuild 506 BLAKE2B dc56b00997ac79eb65edefc34910e1b92467a70130d4a9a9ffa14007d17b1af509443ee28084505f155e7b54f003e5e4576c287c7ad48b5b73adef146c9343c8 SHA512 bf064fe246a4b5c4061c52e60fc2f41aa169e247304500aa7481a28b527666d0ed21db17bc209ddf061d410c43c862dc22163bc77c26626b99b710a667b1f345
diff --git a/app-arch/fastjar/files/0.98-traversal.patch b/app-arch/fastjar/files/0.98-traversal.patch
new file mode 100644
index 0000000..511f4c6
--- /dev/null
+++ b/app-arch/fastjar/files/0.98-traversal.patch
@@ -0,0 +1,112 @@
+--- fastjar-0.98.orig/jartool.c
++++ fastjar-0.98/jartool.c
+@@ -790,6 +790,7 @@
+ 		   progname, jarfile);
+ 	  return 1;
+ 	}
++      ze->filename[len] = '\0';
+       len = UNPACK_UB4(header, CEN_EFLEN);
+       len += UNPACK_UB4(header, CEN_COMLEN);
+       if (lseek (fd, len, SEEK_CUR) == -1)
+@@ -1257,7 +1258,7 @@
+       exit_on_error("write");
+ 
+   /* write the file name to the zip file */
+-  if (1 == write(jfd, fname, file_name_length))
++  if (-1 == write(jfd, fname, file_name_length))
+     exit_on_error("write");
+ 
+   if(verbose){
+@@ -1730,7 +1731,17 @@
+       struct stat sbuf;
+       int depth = 0;
+ 
+-      tmp_buff = malloc(sizeof(char) * strlen((const char *)filename));
++      if(*filename == '/'){
++	fprintf(stderr, "Absolute path names are not allowed.\n");
++	exit(EXIT_FAILURE);
++      }
++
++      tmp_buff = malloc(strlen((const char *)filename));
++
++      if(tmp_buff == NULL) {
++	fprintf(stderr, "Out of memory.\n");
++	exit(EXIT_FAILURE);
++      }
+ 
+       for(;;){
+         const ub1 *idx = (const unsigned char *)strchr((const char *)start, '/');
+@@ -1738,25 +1749,28 @@
+         if(idx == NULL)
+           break;
+         else if(idx == start){
++	  tmp_buff[idx - filename] = '/';
+           start++;
+           continue;
+         }
+-        start = idx + 1;
+ 
+-        strncpy(tmp_buff, (const char *)filename, (idx - filename));
+-        tmp_buff[(idx - filename)] = '\0';
++	memcpy(tmp_buff + (start - filename), (const char *)start, (idx - start));
++	tmp_buff[idx - filename] = '\0';
+ 
+ #ifdef DEBUG    
+         printf("checking the existance of %s\n", tmp_buff);
+ #endif
+-	if(strcmp(tmp_buff, "..") == 0){
++	if(idx - start == 2 && memcmp(start, "..", 2) == 0){
+ 	  --depth;
+ 	  if (depth < 0){
+ 	    fprintf(stderr, "Traversal to parent directories during unpacking!\n");
+ 	    exit(EXIT_FAILURE);
+ 	  }
+-	} else if (strcmp(tmp_buff, ".") != 0)
++	} else if (idx - start != 1 || *start != '.')
+ 	  ++depth;
++
++        start = idx + 1;
++
+         if(stat(tmp_buff, &sbuf) < 0){
+           if(errno != ENOENT)
+             exit_on_error("stat");
+@@ -1765,6 +1779,7 @@
+ #ifdef DEBUG    
+           printf("Directory exists\n");
+ #endif
++	  tmp_buff[idx - filename] = '/';
+           continue;
+         }else {
+           fprintf(stderr, "Hmmm.. %s exists but isn't a directory!\n",
+@@ -1781,10 +1796,11 @@
+         if(verbose && handle)
+           printf("%10s: %s/\n", "created", tmp_buff);
+ 
++	tmp_buff[idx - filename] = '/';
+       }
+ 
+       /* only a directory */
+-      if(strlen((const char *)start) == 0)
++      if(*start == '\0')
+         dir = TRUE;
+ 
+ #ifdef DEBUG    
+@@ -1792,7 +1808,7 @@
+ #endif
+ 
+       /* If the entry was just a directory, don't write to file, etc */
+-      if(strlen((const char *)start) == 0)
++      if(*start == '\0')
+         f_fd = -1;
+ 
+       free(tmp_buff);
+@@ -1876,7 +1892,8 @@
+       exit(EXIT_FAILURE);
+     }
+ 
+-    close(f_fd);
++    if (f_fd != -1)
++      close(f_fd);
+ 
+     if(verbose && dir == FALSE && handle)
+       printf("%10s: %s\n",