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Prevent buffer overflows.

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This commit is contained in:
Kris Kennaway 2000-08-04 06:25:30 +00:00
parent 2efeedfd4b
commit cd79a42a80
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=64222
1 changed files with 10 additions and 0 deletions
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10
lib/libz/minigzip.c
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@ -200,6 +200,11 @@ void file_compress(file, mode)
FILE *in;
gzFile out;
if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) {
fprintf(stderr, "%s: nilename too long\n", prog);
exit(1);
}
strcpy(outfile, file);
strcat(outfile, GZ_SUFFIX);
@ -231,6 +236,11 @@ void file_uncompress(file)
gzFile in;
int len = strlen(file);
if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) {
fprintf(stderr, "%s: filename too long\n", prog);
exit(1);
}
strcpy(buf, file);
if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) {