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check for valid octal input and crude range check on that for validity

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dsp 2014-02-01 19:48:57 +00:00 committed by sin
parent 31894adad2
commit 2e98468788
1 changed files with 3 additions and 0 deletions
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3
chmod.c
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@ -93,6 +93,7 @@ parsemode(const char *str)
octal = strtol(str, &end, 8); octal = strtol(str, &end, 8);
if(*end == '\0') { if(*end == '\0') {
if( octal < 0 || octal > 07777) eprintf("invalid mode\n");
if(octal & 04000) mode |= S_ISUID; if(octal & 04000) mode |= S_ISUID;
if(octal & 02000) mode |= S_ISGID; if(octal & 02000) mode |= S_ISGID;
if(octal & 01000) mode |= S_ISVTX; if(octal & 01000) mode |= S_ISVTX;
@ -106,6 +107,8 @@ parsemode(const char *str)
if(octal & 00002) mode |= S_IWOTH; if(octal & 00002) mode |= S_IWOTH;
if(octal & 00001) mode |= S_IXOTH; if(octal & 00001) mode |= S_IXOTH;
return; return;
} else {
eprintf("not octal\n");
} }
for(p = str; *p; p++) for(p = str; *p; p++)
switch(*p) { switch(*p) {