terom@6: 
terom@6: #include "error.h"
terom@6: 
terom@7: #include <string.h>
terom@7: #include <stdio.h>
terom@7: 
terom@7: #include <netdb.h>
terom@7: #include <gnutls/gnutls.h>
terom@7: 
terom@6: /*
terom@6:  * Helper macros
terom@6:  */
terom@6: #define ERROR_NAME(code, name) case code: return name
terom@6: 
terom@6: const char *error_name (err_t code)
terom@6: {
terom@6:     switch (code) {
terom@6:         ERROR_NAME( ERR_CALLOC,                         "calloc"                                        );
terom@6:         ERROR_NAME( ERR_GETADDRINFO,                    "getaddrinfo"                                   );
terom@8:         ERROR_NAME( ERR_GETADDRINFO_EMPTY,              "getaddrinfo: no results"                       );
terom@6:         ERROR_NAME( ERR_SOCKET,                         "socket"                                        );
terom@6:         ERROR_NAME( ERR_CONNECT,                        "connect"                                       );
terom@6:         ERROR_NAME( ERR_READ,                           "read"                                          );
terom@8:         ERROR_NAME( ERR_READ_EOF,                       "read: EOF"                                     );
terom@6:         ERROR_NAME( ERR_WRITE,                          "write"                                         );
terom@10:         ERROR_NAME( ERR_FCNTL,                          "fcntl"                                         );
terom@6:         ERROR_NAME( ERR_GNUTLS_CERT_ALLOC_CRED,         "gnutls_certificate_allocate_credentials"       );
terom@6:         ERROR_NAME( ERR_GNUTLS_GLOBAL_INIT,             "gnutls_global_init"                            );
terom@6:         ERROR_NAME( ERR_GNUTLS_INIT,                    "gnutls_init"                                   );
terom@6:         ERROR_NAME( ERR_GNUTLS_SET_DEFAULT_PRIORITY,    "gnutls_set_default_priority"                   );
terom@6:         ERROR_NAME( ERR_GNUTLS_CRED_SET,                "gnutls_credentials_set"                        );
terom@6:         ERROR_NAME( ERR_GNUTLS_HANDSHAKE,               "gnutls_handshake"                              );
terom@6:         default: return "[unknown]";
terom@6:     }
terom@6: }
terom@6: 
terom@8: const char *error_msg (const struct error_info *err)
terom@7: {
terom@7:     static char msg[ERROR_MSG_MAXLEN];
terom@7: 
terom@7:     // intrepret .extra
terom@7:     switch (err->code & _ERR_EXTRA_MASK) {
terom@7:         case ERR_EXTRA_NONE:
terom@7:             // no additional info
terom@7:             snprintf(msg, ERROR_MSG_MAXLEN, "%s", error_name(err->code));
terom@7:             break;
terom@7:         
terom@7:         case ERR_EXTRA_ERRNO:
terom@7:             // strerror
terom@7:             snprintf(msg, ERROR_MSG_MAXLEN, "%s: %s", error_name(err->code), strerror(err->extra));
terom@7:             break;
terom@7:         
terom@7:         case ERR_EXTRA_GAI:
terom@7:             // gai_strerror
terom@7:             snprintf(msg, ERROR_MSG_MAXLEN, "%s: %s", error_name(err->code), gai_strerror(err->extra));
terom@7:             break;
terom@7:         
terom@7:         case ERR_EXTRA_GNUTLS:
terom@7:             // gnutls_strerror
terom@7:             snprintf(msg, ERROR_MSG_MAXLEN, "%s: %s", error_name(err->code), gnutls_strerror(err->extra));
terom@7:             break;
terom@7:         
terom@7:         default:
terom@7:             // ???
terom@7:             snprintf(msg, ERROR_MSG_MAXLEN, "%s(%#.8x): %#.8x", error_name(err->code), err->code, err->extra);
terom@7:             break;
terom@7:     }   
terom@7: 
terom@7:     // return static pointer
terom@7:     return msg;
terom@7: }
terom@7: