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authorDaniel Stenberg <daniel@haxx.se>2020-05-18 18:41:20 +0200
committerDaniel Stenberg <daniel@haxx.se>2020-05-19 08:11:46 +0200
commit67521b5ecf0e3b0d8ea5278b02400811715069be (patch)
treeb8963f3895eb50192c272b3a4bc5a09fa8cddf08 /lib
parentdbc5c1773845f9244d6c9a73f7a1069619322ddc (diff)
downloadcurl-67521b5ecf0e3b0d8ea5278b02400811715069be.tar.gz
hostip: make Curl_printable_address not return anything
It was not used much anyway and instead we let it store a blank buffer in case of failure. Reported-by: MonocleAI Fixes #5411 Closes #5418
Diffstat (limited to 'lib')
-rw-r--r--lib/connect.c5
-rw-r--r--lib/hostip.c43
-rw-r--r--lib/hostip.h4
-rw-r--r--lib/hostip6.c9
-rw-r--r--lib/socks.c11
5 files changed, 31 insertions, 41 deletions
diff --git a/lib/connect.c b/lib/connect.c
index 6eb33797b..c53fb7106 100644
--- a/lib/connect.c
+++ b/lib/connect.c
@@ -960,11 +960,12 @@ CURLcode Curl_is_connected(struct connectdata *conn,
#ifndef CURL_DISABLE_VERBOSE_STRINGS
char ipaddress[MAX_IPADR_LEN];
char buffer[STRERROR_LEN];
- Curl_printable_address(conn->tempaddr[i], ipaddress, MAX_IPADR_LEN);
-#endif
+ Curl_printable_address(conn->tempaddr[i], ipaddress,
+ sizeof(ipaddress));
infof(data, "connect to %s port %ld failed: %s\n",
ipaddress, conn->port,
Curl_strerror(error, buffer, sizeof(buffer)));
+#endif
conn->timeoutms_per_addr = conn->tempaddr[i]->ai_next == NULL ?
allow : allow / 2;
diff --git a/lib/hostip.c b/lib/hostip.c
index af907262b..025d9a784 100644
--- a/lib/hostip.c
+++ b/lib/hostip.c
@@ -131,39 +131,36 @@ int Curl_num_addresses(const struct Curl_addrinfo *addr)
}
/*
- * Curl_printable_address() returns a printable version of the 1st address
+ * Curl_printable_address() stores a printable version of the 1st address
* given in the 'ai' argument. The result will be stored in the buf that is
* bufsize bytes big.
*
- * If the conversion fails, it returns NULL.
+ * If the conversion fails, the target buffer is empty.
*/
-const char *Curl_printable_address(const struct Curl_addrinfo *ai, char *buf,
- size_t bufsize)
+void Curl_printable_address(const struct Curl_addrinfo *ai, char *buf,
+ size_t bufsize)
{
- const struct sockaddr_in *sa4;
- const struct in_addr *ipaddr4;
-#ifdef ENABLE_IPV6
- const struct sockaddr_in6 *sa6;
- const struct in6_addr *ipaddr6;
-#endif
+ DEBUGASSERT(bufsize);
+ buf[0] = 0;
switch(ai->ai_family) {
- case AF_INET:
- sa4 = (const void *)ai->ai_addr;
- ipaddr4 = &sa4->sin_addr;
- return Curl_inet_ntop(ai->ai_family, (const void *)ipaddr4, buf,
- bufsize);
+ case AF_INET: {
+ const struct sockaddr_in *sa4 = (const void *)ai->ai_addr;
+ const struct in_addr *ipaddr4 = &sa4->sin_addr;
+ (void)Curl_inet_ntop(ai->ai_family, (const void *)ipaddr4, buf, bufsize);
+ break;
+ }
#ifdef ENABLE_IPV6
- case AF_INET6:
- sa6 = (const void *)ai->ai_addr;
- ipaddr6 = &sa6->sin6_addr;
- return Curl_inet_ntop(ai->ai_family, (const void *)ipaddr6, buf,
- bufsize);
+ case AF_INET6: {
+ const struct sockaddr_in6 *sa6 = (const void *)ai->ai_addr;
+ const struct in6_addr *ipaddr6 = &sa6->sin6_addr;
+ (void)Curl_inet_ntop(ai->ai_family, (const void *)ipaddr6, buf, bufsize);
+ break;
+ }
#endif
- default:
- break;
+ default:
+ break;
}
- return NULL;
}
/*
diff --git a/lib/hostip.h b/lib/hostip.h
index d287fdcbf..374b06c85 100644
--- a/lib/hostip.h
+++ b/lib/hostip.h
@@ -165,8 +165,8 @@ CURLcode Curl_addrinfo_callback(struct connectdata *conn,
* given in the 'ip' argument. The result will be stored in the buf that is
* bufsize bytes big.
*/
-const char *Curl_printable_address(const struct Curl_addrinfo *ip,
- char *buf, size_t bufsize);
+void Curl_printable_address(const struct Curl_addrinfo *ip,
+ char *buf, size_t bufsize);
/*
* Curl_fetch_addr() fetches a 'Curl_dns_entry' already in the DNS cache.
diff --git a/lib/hostip6.c b/lib/hostip6.c
index 9b7d17f80..11215758d 100644
--- a/lib/hostip6.c
+++ b/lib/hostip6.c
@@ -111,13 +111,8 @@ static void dump_addrinfo(struct connectdata *conn,
char buf[INET6_ADDRSTRLEN];
printf(" fam %2d, CNAME %s, ",
ai->ai_family, ai->ai_canonname ? ai->ai_canonname : "<none>");
- if(Curl_printable_address(ai, buf, sizeof(buf)))
- printf("%s\n", buf);
- else {
- char buffer[STRERROR_LEN];
- printf("failed; %s\n",
- Curl_strerror(SOCKERRNO, buffer, sizeof(buffer)));
- }
+ Curl_printable_address(ai, buf, sizeof(buf));
+ printf("%s\n", buf);
}
}
#else
diff --git a/lib/socks.c b/lib/socks.c
index 597757251..6031096f9 100644
--- a/lib/socks.c
+++ b/lib/socks.c
@@ -774,6 +774,7 @@ CURLcode Curl_SOCKS5(const char *proxy_user,
CONNECT_RESOLVED:
case CONNECT_RESOLVED: {
struct Curl_addrinfo *hp = NULL;
+ size_t destlen;
if(dns)
hp = dns->addr;
if(!hp) {
@@ -782,13 +783,9 @@ CURLcode Curl_SOCKS5(const char *proxy_user,
return CURLE_COULDNT_RESOLVE_HOST;
}
- if(Curl_printable_address(hp, dest, sizeof(dest))) {
- size_t destlen = strlen(dest);
- msnprintf(dest + destlen, sizeof(dest) - destlen, ":%d", remote_port);
- }
- else {
- strcpy(dest, "unknown");
- }
+ Curl_printable_address(hp, dest, sizeof(dest));
+ destlen = strlen(dest);
+ msnprintf(dest + destlen, sizeof(dest) - destlen, ":%d", remote_port);
len = 0;
socksreq[len++] = 5; /* version (SOCKS5) */