diff options
Diffstat (limited to 'Utilities/cmcurl/lib/altsvc.c')
| -rw-r--r-- | Utilities/cmcurl/lib/altsvc.c | 62 |
1 files changed, 24 insertions, 38 deletions
diff --git a/Utilities/cmcurl/lib/altsvc.c b/Utilities/cmcurl/lib/altsvc.c index dd2d0eb..7bca840 100644 --- a/Utilities/cmcurl/lib/altsvc.c +++ b/Utilities/cmcurl/lib/altsvc.c @@ -18,6 +18,8 @@ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * + * SPDX-License-Identifier: curl + * ***************************************************************************/ /* * The Alt-Svc: header is defined in RFC 7838: @@ -34,7 +36,7 @@ #include "parsedate.h" #include "sendf.h" #include "warnless.h" -#include "rand.h" +#include "fopen.h" #include "rename.h" /* The last 3 #include files should be in this order */ @@ -50,15 +52,7 @@ #define MAX_ALTSVC_ALPNLENSTR "10" #define MAX_ALTSVC_ALPNLEN 10 -#if defined(USE_QUICHE) && !defined(UNITTESTS) -#define H3VERSION "h3-29" -#elif defined(USE_NGTCP2) && !defined(UNITTESTS) -#define H3VERSION "h3-29" -#elif defined(USE_MSH3) && !defined(UNITTESTS) -#define H3VERSION "h3-29" -#else #define H3VERSION "h3" -#endif static enum alpnid alpn2alpnid(char *name) { @@ -184,10 +178,9 @@ static CURLcode altsvc_add(struct altsvcinfo *asi, char *line) /* * Load alt-svc entries from the given file. The text based line-oriented file - * format is documented here: - * https://github.com/curl/curl/wiki/QUIC-implementation + * format is documented here: https://curl.se/docs/alt-svc.html * - * This function only returns error on major problems that prevents alt-svc + * This function only returns error on major problems that prevent alt-svc * handling to work completely. It will ignore individual syntactical errors * etc. */ @@ -336,8 +329,7 @@ CURLcode Curl_altsvc_save(struct Curl_easy *data, struct Curl_llist_element *n; CURLcode result = CURLE_OK; FILE *out; - char *tempstore; - unsigned char randsuffix[9]; + char *tempstore = NULL; if(!altsvc) /* no cache activated */ @@ -351,17 +343,8 @@ CURLcode Curl_altsvc_save(struct Curl_easy *data, /* marked as read-only, no file or zero length file name */ return CURLE_OK; - if(Curl_rand_hex(data, randsuffix, sizeof(randsuffix))) - return CURLE_FAILED_INIT; - - tempstore = aprintf("%s.%s.tmp", file, randsuffix); - if(!tempstore) - return CURLE_OUT_OF_MEMORY; - - out = fopen(tempstore, FOPEN_WRITETEXT); - if(!out) - result = CURLE_WRITE_ERROR; - else { + result = Curl_fopen(data, file, &out, &tempstore); + if(!result) { fputs("# Your alt-svc cache. https://curl.se/docs/alt-svc.html\n" "# This file was generated by libcurl! Edit at your own risk.\n", out); @@ -373,10 +356,10 @@ CURLcode Curl_altsvc_save(struct Curl_easy *data, break; } fclose(out); - if(!result && Curl_rename(tempstore, file)) + if(!result && tempstore && Curl_rename(tempstore, file)) result = CURLE_WRITE_ERROR; - if(result) + if(result && tempstore) unlink(tempstore); } free(tempstore); @@ -479,6 +462,7 @@ CURLcode Curl_altsvc_parse(struct Curl_easy *data, struct altsvc *as; unsigned short dstport = srcport; /* the same by default */ CURLcode result = getalnum(&p, alpnbuf, sizeof(alpnbuf)); + size_t entries = 0; #ifdef CURL_DISABLE_VERBOSE_STRINGS (void)data; #endif @@ -489,11 +473,10 @@ CURLcode Curl_altsvc_parse(struct Curl_easy *data, DEBUGASSERT(asi); - /* Flush all cached alternatives for this source origin, if any */ - altsvc_flush(asi, srcalpnid, srchost, srcport); - /* "clear" is a magic keyword */ if(strcasecompare(alpnbuf, "clear")) { + /* Flush cached alternatives for this source origin */ + altsvc_flush(asi, srcalpnid, srchost, srcport); return CURLE_OK; } @@ -511,6 +494,7 @@ CURLcode Curl_altsvc_parse(struct Curl_easy *data, bool quoted = FALSE; time_t maxage = 24 * 3600; /* default is 24 hours */ bool persist = FALSE; + bool valid = TRUE; p++; if(*p != ':') { /* host name starts here */ @@ -520,7 +504,7 @@ CURLcode Curl_altsvc_parse(struct Curl_easy *data, len = p - hostp; if(!len || (len >= MAX_ALTSVC_HOSTLEN)) { infof(data, "Excessive alt-svc host name, ignoring."); - dstalpnid = ALPN_none; + valid = FALSE; } else { memcpy(namebuf, hostp, len); @@ -537,10 +521,11 @@ CURLcode Curl_altsvc_parse(struct Curl_easy *data, unsigned long port = strtoul(++p, &end_ptr, 10); if(port > USHRT_MAX || end_ptr == p || *end_ptr != '\"') { infof(data, "Unknown alt-svc port number, ignoring."); - dstalpnid = ALPN_none; + valid = FALSE; } + else + dstport = curlx_ultous(port); p = end_ptr; - dstport = curlx_ultous(port); } if(*p++ != '\"') break; @@ -592,7 +577,12 @@ CURLcode Curl_altsvc_parse(struct Curl_easy *data, persist = TRUE; } } - if(dstalpnid) { + if(dstalpnid && valid) { + if(!entries++) + /* Flush cached alternatives for this source origin, if any - when + this is the first entry of the line. */ + altsvc_flush(asi, srcalpnid, srchost, srcport); + as = altsvc_createid(srchost, dsthost, srcalpnid, dstalpnid, srcport, dstport); @@ -606,10 +596,6 @@ CURLcode Curl_altsvc_parse(struct Curl_easy *data, Curl_alpnid2str(dstalpnid)); } } - else { - infof(data, "Unknown alt-svc protocol \"%s\", skipping.", - alpnbuf); - } } else break; |