diff options
| -rw-r--r-- | ChangeLog | 2 | ||||
| -rw-r--r-- | src/or/dns.c | 7 | ||||
| -rw-r--r-- | src/or/eventdns.c | 13 |
3 files changed, 15 insertions, 7 deletions
@@ -131,6 +131,8 @@ Changes in version 0.2.0.1-alpha - 2007-??-?? try to use \ consistently on Windows and / consistently on Unix: it makes the log messages nicer. - Correctly report platform name on Windows 95 OSR2 and Windows 98 SE. + - Read resolv.conf files correctly on platforms where read() returns + partial results on small file reads. o Minor bugfixes (directory): - Correctly enforce that elements of directory objects do not appear diff --git a/src/or/dns.c b/src/or/dns.c index 7cf6f9fad4..588389ae18 100644 --- a/src/or/dns.c +++ b/src/or/dns.c @@ -1054,6 +1054,7 @@ configure_nameservers(int force) or_options_t *options; const char *conf_fname; struct stat st; + int r; options = get_options(); conf_fname = options->ServerDNSResolvConfFile; #ifndef MS_WINDOWS @@ -1078,9 +1079,9 @@ configure_nameservers(int force) evdns_clear_nameservers_and_suspend(); } log_info(LD_EXIT, "Parsing resolver configuration in '%s'", conf_fname); - if (evdns_resolv_conf_parse(DNS_OPTIONS_ALL, conf_fname)) { - log_warn(LD_EXIT, "Unable to parse '%s', or no nameservers in '%s'", - conf_fname, conf_fname); + if ((r = evdns_resolv_conf_parse(DNS_OPTIONS_ALL, conf_fname))) { + log_warn(LD_EXIT, "Unable to parse '%s', or no nameservers in '%s' (%d)", + conf_fname, conf_fname, r); return -1; } if (evdns_count_nameservers() == 0) { diff --git a/src/or/eventdns.c b/src/or/eventdns.c index fb267babc7..48db73d7ce 100644 --- a/src/or/eventdns.c +++ b/src/or/eventdns.c @@ -2691,7 +2691,7 @@ resolv_conf_parse_line(char *const start, int flags) { int evdns_resolv_conf_parse(int flags, const char *const filename) { struct stat st; - int fd; + int fd, n, r; u8 *resolv; char *start; int err = 0; @@ -2715,10 +2715,15 @@ evdns_resolv_conf_parse(int flags, const char *const filename) { resolv = (u8 *) malloc((size_t)st.st_size + 1); if (!resolv) { err = 4; goto out1; } - if (read(fd, resolv, (size_t)st.st_size) != st.st_size) { - err = 5; goto out2; + n = 0; + while ((r = read(fd, resolv+n, (size_t)st.st_size-n)) > 0) { + n += r; + if (n == st.st_size) + break; + assert(n < st.st_size); } - resolv[st.st_size] = 0; // we malloced an extra byte + if (r < 0) { err = 5; goto out2; } + resolv[n] = 0; // we malloced an extra byte; this should be fine. start = (char *) resolv; for (;;) { |