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Pass the error stream pointer to the URL globber, so that it can report

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errors correctly to the user, if need be.

Also fixed so that a missing ] in the globbing process no longer leads
to core dump.
This commit is contained in:
Daniel Stenberg 2003-06-10 09:42:22 +00:00
parent 8d30d34e0c
commit e7fb72a732
3 changed files with 53 additions and 33 deletions
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8
src/main.c
View File

@ -2592,7 +2592,9 @@ operate(struct Configurable *config, int argc, char *argv[])
if(!config->globoff) { if(!config->globoff) {
/* Unless explicitly shut off, we expand '{...}' and '[...]' expressions /* Unless explicitly shut off, we expand '{...}' and '[...]' expressions
and return total number of URLs in pattern set */ and return total number of URLs in pattern set */
res = glob_url(&urls, url, &urlnum); res = glob_url(&urls, url, &urlnum,
config->showerror?
(config->errors?config->errors:stderr):NULL);
if(res != CURLE_OK) if(res != CURLE_OK)
return res; return res;
} }
@ -2606,7 +2608,7 @@ operate(struct Configurable *config, int argc, char *argv[])
separator = 1; separator = 1;
} }
for(i = 0; for(i = 0;
(url = urls?next_url(urls):(i?NULL:strdup(url))); (url = urls?glob_next_url(urls):(i?NULL:strdup(url)));
i++) { i++) {
char *outfile; char *outfile;
outfile = outfiles?strdup(outfiles):NULL; outfile = outfiles?strdup(outfiles):NULL;
@ -2636,7 +2638,7 @@ operate(struct Configurable *config, int argc, char *argv[])
else if(urls) { else if(urls) {
/* fill '#1' ... '#9' terms from URL pattern */ /* fill '#1' ... '#9' terms from URL pattern */
char *storefile = outfile; char *storefile = outfile;
outfile = match_url(storefile, urls); outfile = glob_match_url(storefile, urls);
free(storefile); free(storefile);
} }

72
src/urlglob.c
View File

@ -35,6 +35,7 @@
#include "../lib/memdebug.h" #include "../lib/memdebug.h"
#endif #endif
char globerrormsg[80]; /* nasty global error message buffer for globbing */
typedef enum { typedef enum {
GLOB_OK, GLOB_OK,
GLOB_ERROR GLOB_ERROR
@ -46,12 +47,12 @@ typedef enum {
* Input a full globbed string, set the forth argument to the amount of * Input a full globbed string, set the forth argument to the amount of
* strings we get out of this. Return GlobCode. * strings we get out of this. Return GlobCode.
*/ */
GlobCode glob_word(URLGlob *, /* object anchor */ static GlobCode glob_word(URLGlob *, /* object anchor */
char *, /* globbed string */ char *, /* globbed string */
int, /* position */ int, /* position */
int *); /* returned number of strings */ int *); /* returned number of strings */
GlobCode glob_set(URLGlob *glob, char *pattern, int pos, int *amount) static GlobCode glob_set(URLGlob *glob, char *pattern, int pos, int *amount)
{ {
/* processes a set expression with the point behind the opening '{' /* processes a set expression with the point behind the opening '{'
','-separated elements are collected until the next closing '}' ','-separated elements are collected until the next closing '}'
@ -70,12 +71,14 @@ GlobCode glob_set(URLGlob *glob, char *pattern, int pos, int *amount)
while (1) { while (1) {
switch (*pattern) { switch (*pattern) {
case '\0': /* URL ended while set was still open */ case '\0': /* URL ended while set was still open */
/*printf("error: unmatched brace at pos %d\n", pos);*/ snprintf(globerrormsg, sizeof(globerrormsg),
"unmatched brace at pos %d\n", pos);
return GLOB_ERROR; return GLOB_ERROR;
case '{': case '{':
case '[': /* no nested expressions at this time */ case '[': /* no nested expressions at this time */
/*printf("error: nested braces not supported %d\n", pos);*/ snprintf(globerrormsg, sizeof(globerrormsg),
"nested braces not supported at pos %d\n", pos);
return GLOB_ERROR; return GLOB_ERROR;
case ',': case ',':
@ -85,7 +88,7 @@ GlobCode glob_set(URLGlob *glob, char *pattern, int pos, int *amount)
realloc(pat->content.Set.elements, realloc(pat->content.Set.elements,
(pat->content.Set.size + 1) * sizeof(char*)); (pat->content.Set.size + 1) * sizeof(char*));
if (!pat->content.Set.elements) { if (!pat->content.Set.elements) {
/*printf("out of memory in set pattern\n");*/ snprintf(globerrormsg, sizeof(globerrormsg), "out of memory");
return GLOB_ERROR; return GLOB_ERROR;
} }
pat->content.Set.elements[pat->content.Set.size] = pat->content.Set.elements[pat->content.Set.size] =
@ -110,12 +113,14 @@ GlobCode glob_set(URLGlob *glob, char *pattern, int pos, int *amount)
break; break;
case ']': /* illegal closing bracket */ case ']': /* illegal closing bracket */
/*printf("error: illegal pattern at pos %d\n", pos);*/ snprintf(globerrormsg, sizeof(globerrormsg),
"illegal pattern at pos %d\n", pos);
return GLOB_ERROR; return GLOB_ERROR;
case '\\': /* escaped character, skip '\' */ case '\\': /* escaped character, skip '\' */
if (*(buf+1) == '\0') { /* but no escaping of '\0'! */ if (*(buf+1) == '\0') { /* but no escaping of '\0'! */
/*printf("error: illegal pattern at pos %d\n", pos); */ snprintf(globerrormsg, sizeof(globerrormsg),
"illegal pattern at pos %d\n", pos);
return GLOB_ERROR; return GLOB_ERROR;
} }
++pattern; ++pattern;
@ -126,10 +131,11 @@ GlobCode glob_set(URLGlob *glob, char *pattern, int pos, int *amount)
++pos; ++pos;
} }
} }
snprintf(globerrormsg, sizeof(globerrormsg), "malformatted pattern");
return GLOB_ERROR; return GLOB_ERROR;
} }
GlobCode glob_range(URLGlob *glob, char *pattern, int pos, int *amount) static GlobCode glob_range(URLGlob *glob, char *pattern, int pos, int *amount)
{ {
/* processes a range expression with the point behind the opening '[' /* processes a range expression with the point behind the opening '['
- char range: e.g. "a-z]", "B-Q]" - char range: e.g. "a-z]", "B-Q]"
@ -152,10 +158,8 @@ GlobCode glob_range(URLGlob *glob, char *pattern, int pos, int *amount)
pat->content.CharRange.min_c >= pat->content.CharRange.max_c || pat->content.CharRange.min_c >= pat->content.CharRange.max_c ||
pat->content.CharRange.max_c - pat->content.CharRange.min_c > 'z' - 'a') { pat->content.CharRange.max_c - pat->content.CharRange.min_c > 'z' - 'a') {
/* the pattern is not well-formed */ /* the pattern is not well-formed */
#if 0 snprintf(globerrormsg, sizeof(globerrormsg),
printf("error: illegal pattern or range specification after pos %d\n", "illegal pattern or range specification after pos %d\n", pos);
pos);
#endif
return GLOB_ERROR; return GLOB_ERROR;
} }
pat->content.CharRange.ptr_c = pat->content.CharRange.min_c; pat->content.CharRange.ptr_c = pat->content.CharRange.min_c;
@ -180,10 +184,9 @@ GlobCode glob_range(URLGlob *glob, char *pattern, int pos, int *amount)
&pat->content.NumRange.max_n) != 2 || &pat->content.NumRange.max_n) != 2 ||
pat->content.NumRange.min_n >= pat->content.NumRange.max_n) { pat->content.NumRange.min_n >= pat->content.NumRange.max_n) {
/* the pattern is not well-formed */ /* the pattern is not well-formed */
#if 0 snprintf(globerrormsg, sizeof(globerrormsg),
printf("error: illegal pattern or range specification after pos %d\n", "error: illegal pattern or range specification after pos %d\n",
pos); pos);
#endif
return GLOB_ERROR; return GLOB_ERROR;
} }
if (*pattern == '0') { /* leading zero specified */ if (*pattern == '0') { /* leading zero specified */
@ -193,7 +196,13 @@ GlobCode glob_range(URLGlob *glob, char *pattern, int pos, int *amount)
instances of this pattern */ instances of this pattern */
} }
pat->content.NumRange.ptr_n = pat->content.NumRange.min_n; pat->content.NumRange.ptr_n = pat->content.NumRange.min_n;
c = (char*)(strchr(pattern, ']') + 1); /* continue after next ']' */ c = (char*)strchr(pattern, ']'); /* continue after next ']' */
if(c)
c++;
else {
snprintf(globerrormsg, sizeof(globerrormsg), "missing ']'");
return GLOB_ERROR; /* missing ']' */
}
/* always check for a literal (may be "") between patterns */ /* always check for a literal (may be "") between patterns */
@ -206,12 +215,12 @@ GlobCode glob_range(URLGlob *glob, char *pattern, int pos, int *amount)
return GLOB_OK; return GLOB_OK;
} }
/*printf("error: illegal character in range specification at pos %d\n", snprintf(globerrormsg, sizeof(globerrormsg),
pos);*/ "illegal character in range specification at pos %d\n", pos);
return GLOB_ERROR; return GLOB_ERROR;
} }
GlobCode glob_word(URLGlob *glob, char *pattern, int pos, int *amount) static GlobCode glob_word(URLGlob *glob, char *pattern, int pos, int *amount)
{ {
/* processes a literal string component of a URL /* processes a literal string component of a URL
special characters '{' and '[' branch to set/range processing functions special characters '{' and '[' branch to set/range processing functions
@ -261,7 +270,7 @@ GlobCode glob_word(URLGlob *glob, char *pattern, int pos, int *amount)
return GLOB_ERROR; /* something got wrong */ return GLOB_ERROR; /* something got wrong */
} }
int glob_url(URLGlob** glob, char* url, int *urlnum) int glob_url(URLGlob** glob, char* url, int *urlnum, FILE *error)
{ {
/* /*
* We can deal with any-size, just make a buffer with the same length * We can deal with any-size, just make a buffer with the same length
@ -271,12 +280,15 @@ int glob_url(URLGlob** glob, char* url, int *urlnum)
int amount; int amount;
char *glob_buffer=(char *)malloc(strlen(url)+1); char *glob_buffer=(char *)malloc(strlen(url)+1);
if(NULL == glob_buffer) if(NULL == glob_buffer) {
snprintf(globerrormsg, sizeof(globerrormsg), "out of memory");
return CURLE_OUT_OF_MEMORY; return CURLE_OUT_OF_MEMORY;
}
glob_expand = (URLGlob*)malloc(sizeof(URLGlob)); glob_expand = (URLGlob*)malloc(sizeof(URLGlob));
if(NULL == glob_expand) { if(NULL == glob_expand) {
free(glob_buffer); free(glob_buffer);
snprintf(globerrormsg, sizeof(globerrormsg), "out of memory");
return CURLE_OUT_OF_MEMORY; return CURLE_OUT_OF_MEMORY;
} }
glob_expand->size = 0; glob_expand->size = 0;
@ -291,6 +303,12 @@ int glob_url(URLGlob** glob, char* url, int *urlnum)
free(glob_expand); free(glob_expand);
glob_expand = NULL; glob_expand = NULL;
*urlnum = 1; *urlnum = 1;
if(error && globerrormsg[0]) {
/* send error description to the error-stream */
fprintf(error, "curl: (%d) [globbing] %s\n",
CURLE_URL_MALFORMAT, globerrormsg);
}
return CURLE_URL_MALFORMAT;
} }
*glob = glob_expand; *glob = glob_expand;
@ -317,7 +335,7 @@ void glob_cleanup(URLGlob* glob)
free(glob); free(glob);
} }
char *next_url(URLGlob *glob) char *glob_next_url(URLGlob *glob)
{ {
char *buf = glob->glob_buffer; char *buf = glob->glob_buffer;
URLPattern *pat; URLPattern *pat;
@ -393,7 +411,7 @@ char *next_url(URLGlob *glob)
return strdup(glob->glob_buffer); return strdup(glob->glob_buffer);
} }
char *match_url(char *filename, URLGlob *glob) char *glob_match_url(char *filename, URLGlob *glob)
{ {
char *target; char *target;
URLPattern pat; URLPattern pat;

6
src/urlglob.h
View File

@ -53,9 +53,9 @@ typedef struct {
char beenhere; char beenhere;
} URLGlob; } URLGlob;
int glob_url(URLGlob**, char*, int *); int glob_url(URLGlob**, char*, int *, FILE *);
char* next_url(URLGlob*); char* glob_next_url(URLGlob*);
char* match_url(char*, URLGlob *); char* glob_match_url(char*, URLGlob *);
void glob_cleanup(URLGlob* glob); void glob_cleanup(URLGlob* glob);
#endif #endif