From: Peter Verthez Date: Fri, 16 Aug 2002 16:21:09 +0000 (+0000) Subject: Handle illegal characters in to_internal (to avoid crashes). X-Git-Url: https://git.dlugolecki.net.pl/?a=commitdiff_plain;h=5c54a356fc4542790b2667edcd369ed99f688712;p=gedcom-parse.git Handle illegal characters in to_internal (to avoid crashes). --- diff --git a/gedcom/encoding.c b/gedcom/encoding.c index d97f63c..315b4ad 100644 --- a/gedcom/encoding.c +++ b/gedcom/encoding.c @@ -233,9 +233,11 @@ void close_conv_to_internal() char* to_internal(char* str, size_t len, char* output_buffer, size_t out_len) { + size_t res; size_t outsize = out_len; char *wrptr = output_buffer; char *rdptr = conv_buf; + char *retval = output_buffer; /* set up input buffer (concatenate to what was left previous time) */ /* can't use strcpy, because possible null bytes from unicode */ memcpy(conv_buf + conv_buf_size, str, len); @@ -243,9 +245,18 @@ char* to_internal(char* str, size_t len, /* set up output buffer (empty it) */ memset(output_buffer, 0, out_len); /* do the conversion */ - iconv(cd_to_internal, &rdptr, &conv_buf_size, &wrptr, &outsize); + res = iconv(cd_to_internal, &rdptr, &conv_buf_size, &wrptr, &outsize); + if (res == (size_t)-1) { + if (errno == EILSEQ) { + /* restart from an empty state and return NULL */ + iconv(cd_to_internal, NULL, NULL, NULL, NULL); + retval = NULL; + rdptr++; + conv_buf_size--; + } + } /* then shift what is left over to the head of the input buffer */ memmove(conv_buf, rdptr, conv_buf_size); memset(conv_buf + conv_buf_size, 0, sizeof(conv_buf) - conv_buf_size); - return output_buffer; + return retval; }