diff options
Diffstat (limited to 'common.c')
| -rw-r--r-- | common.c | 71 |
1 files changed, 70 insertions, 1 deletions
@@ -1,7 +1,7 @@ /* * common.c: common functionality * - * Copyright (c) 2014 - 2020, Přemysl Eric Janouch <p@janouch.name> + * Copyright (c) 2014 - 2022, Přemysl Eric Janouch <p@janouch.name> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted. @@ -48,6 +48,66 @@ init_openssl (void) #endif } +static char * +gai_reconstruct_address (struct addrinfo *ai) +{ + char host[NI_MAXHOST] = {}, port[NI_MAXSERV] = {}; + int err = getnameinfo (ai->ai_addr, ai->ai_addrlen, + host, sizeof host, port, sizeof port, + NI_NUMERICHOST | NI_NUMERICSERV); + if (err) + { + print_debug ("%s: %s", "getnameinfo", gai_strerror (err)); + return xstrdup ("?"); + } + return format_host_port_pair (host, port); +} + +static bool +accept_error_is_transient (int err) +{ + // OS kernels may return a wide range of unforeseeable errors. + // Assuming that they're either transient or caused by + // a connection that we've just extracted from the queue. + switch (err) + { + case EBADF: + case EINVAL: + case ENOTSOCK: + case EOPNOTSUPP: + return false; + default: + return true; + } +} + +/// Destructively tokenize an address into a host part, and a port part. +/// The port is only overwritten if that part is found, allowing for defaults. +static const char * +tokenize_host_port (char *address, const char **port) +{ + // Unwrap IPv6 addresses in format_host_port_pair() format. + char *rbracket = strchr (address, ']'); + if (*address == '[' && rbracket) + { + if (rbracket[1] == ':') + { + *port = rbracket + 2; + return *rbracket = 0, address + 1; + } + if (!rbracket[1]) + return *rbracket = 0, address + 1; + } + + char *colon = strchr (address, ':'); + if (colon) + { + *port = colon + 1; + return *colon = 0, address; + } + return address; +} + // --- To be moved to liberty -------------------------------------------------- // FIXME: in xssl_get_error() we rely on error reasons never being NULL (i.e., @@ -74,6 +134,15 @@ xerr_describe_error (void) return reason; } +static struct str +str_from_cstr (const char *cstr) +{ + struct str self; + self.alloc = (self.len = strlen (cstr)) + 1; + self.str = memcpy (xmalloc (self.alloc), cstr, self.alloc); + return self; +} + static ssize_t strv_find (const struct strv *v, const char *s) { |