106 lines
2.0 KiB
Diff
106 lines
2.0 KiB
Diff
The iconv() functions to convert to and from Pilot charset pass
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a const char* as the source text, but iconv() expects a char**.
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Create a local copy of the const char* and use that.
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Also add sanity checks to avoid dereferencing NULL pointers.
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--- a/libpisync/util.c 2006-08-25 14:33:25.000000000 +0200
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+++ b/libpisync/util.c 2016-12-20 14:55:18.996691848 +0100
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@@ -104,24 +104,44 @@
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int bytes, char **ptext, const char * pi_charset)
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{
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#ifdef HAVE_ICONV
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+ char* ib;
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char* ob;
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iconv_t cd;
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- size_t ibl, obl;
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+ size_t tbl, ibl, obl;
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+
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+ if(NULL==text){
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+ return -1;
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+ }
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+ tbl = strlen(text) + 1;
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+ ib = calloc(tbl, sizeof(char));
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+ if(NULL==ib){
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+ return -1;
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+ }
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+ memcpy(ib, text, tbl);
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if(NULL==pi_charset){
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pi_charset = PILOT_CHARSET;
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}
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-
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cd = iconv_open(pi_charset, charset);
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- if (cd==(iconv_t)-1)
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+ if (cd==(iconv_t)-1) {
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+ free(ib);
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return -1;
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+ }
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ibl = bytes;
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obl = bytes * 4 + 1;
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*ptext = ob = malloc(obl);
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+ if(NULL==ob){
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+ free(ib);
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+ return -1;
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+ }
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- if (iconv(cd, &text, &ibl, &ob, &obl) == (size_t)-1)
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+ if (iconv(cd, &ib, &ibl, &ob, &obl) == (size_t)-1) {
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+ free(ib);
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+ free(ob);
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return -1;
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+ }
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+ free(ib);
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*ob = '\0';
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iconv_close(cd);
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@@ -195,24 +215,44 @@
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int bytes, char **text, const char * pi_charset)
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{
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#ifdef HAVE_ICONV
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+ char* ib;
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char* ob;
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iconv_t cd;
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- size_t ibl, obl;
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+ size_t tbl, ibl, obl;
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+
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+ if(NULL==ptext){
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+ return -1;
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+ }
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+ tbl = strlen(ptext) + 1;
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+ ib = calloc(tbl, sizeof(char));
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+ if(NULL==ib){
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+ return -1;
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+ }
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+ memcpy(ib, ptext, tbl);
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if(NULL==pi_charset){
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pi_charset = PILOT_CHARSET;
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}
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-
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cd = iconv_open(charset, pi_charset);
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- if (cd==(iconv_t)-1)
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+ if (cd==(iconv_t)-1) {
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+ free(ib);
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return -1;
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+ }
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ibl = bytes;
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obl = bytes * 4 + 1;
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*text = ob = malloc(obl);
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+ if(NULL==ob){
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+ free(ib);
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+ return -1;
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+ }
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- if (iconv(cd, &ptext, &ibl, &ob, &obl) == (size_t)-1)
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+ if (iconv(cd, &ib, &ibl, &ob, &obl) == (size_t)-1) {
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+ free(ib);
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+ free(ob);
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return -1;
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+ }
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+ free(ib);
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*ob = '\0';
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iconv_close(cd);
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