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Code Issues Releases Wiki Activity

parse_filename: deal with escaped quotes

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This commit is contained in:
Daniel Stenberg 2011-08-04 23:14:12 +02:00
parent a6ed2b8426
commit 8f890470f1
1 changed files with 23 additions and 25 deletions
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48
src/main.c
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@ -4467,21 +4467,23 @@ parse_filename(char *ptr, size_t len)
char* copy;
char* p;
char* q;
char quote = 0;
char stop = 0;
/* simple implementation of strndup() */
copy = malloc(len+1);
if(!copy)
return NULL;
strncpy(copy, ptr, len);
memcpy(copy, ptr, len);
copy[len] = 0;
p = copy;
if(*p == '\'' || *p == '"') {
/* store the starting quote */
quote = *p;
stop = *p;
p++;
}
else
stop = ';';
/* if the filename contains a path, only use filename portion */
q = strrchr(copy, '/');
@ -4505,26 +4507,25 @@ parse_filename(char *ptr, size_t len)
}
}
if(quote) {
/* if the file name started with a quote, then scan for the end quote and
stop there */
q = strrchr(p, quote);
if(q)
*q = 0;
/* scan for the end letter and stop there */
q = p;
while(*q) {
if(q[1] && q[0]=='\\')
q++;
else if(q[0] == stop)
break;
q++;
}
else
q = NULL; /* no start quote, so no end has been found */
*q = 0;
if(!q) {
/* make sure the file name doesn't end in \r or \n */
q = strchr(p, '\r');
if(q)
*q = 0;
/* make sure the file name doesn't end in \r or \n */
q = strchr(p, '\r');
if(q)
*q = 0;
q = strchr(p, '\n');
if(q)
*q = 0;
}
q = strchr(p, '\n');
if(q)
*q = 0;
if(copy!=p)
memmove(copy, p, strlen(p)+1);
@ -4559,7 +4560,6 @@ header_callback(void *ptr, size_t size, size_t nmemb, void *stream)
const char* str = (char*)ptr;
const size_t cb = size*nmemb;
const char* end = (char*)ptr + cb;
size_t len;
if(cb > 20 && checkprefix("Content-disposition:", str)) {
char *p = (char*)str + 20;
@ -4568,8 +4568,7 @@ header_callback(void *ptr, size_t size, size_t nmemb, void *stream)
(encoded filenames (*=) are not supported) */
for(;;) {
char *filename;
char *eol; /* end of line, we can't easily search for the end of the
file name due to it sometimes being quoted or not */
size_t len;
while(*p && (p < end) && !ISALPHA(*p))
p++;
@ -4583,12 +4582,11 @@ header_callback(void *ptr, size_t size, size_t nmemb, void *stream)
continue;
}
p+=9;
eol = strchr(p, '\n');
/* this expression below typecasts 'cb' only to avoid
warning: signed and unsigned type in conditional expression
*/
len = eol ? (eol - p) : (ssize_t)cb - (p - str);
len = (ssize_t)cb - (p - str);
filename = parse_filename(p, len);
if(filename) {
outs->filename = filename;