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35 RCSID("$Id: error.c 22332 2007-12-17 01:03:22Z lha $");
38 * @page page_error Hx509 error reporting functions
40 * See the library functions here: @ref hx509_error
43 struct hx509_error_data {
50 free_error_string(hx509_error msg)
53 hx509_error m2 = msg->next;
61 * Resets the error strings the hx509 context.
63 * @param context A hx509 context.
65 * @ingroup hx509_error
69 hx509_clear_error_string(hx509_context context)
71 free_error_string(context->error);
72 context->error = NULL;
76 * Add an error message to the hx509 context.
78 * @param context A hx509 context.
80 * - HX509_ERROR_APPEND appends the error string to the old messages
82 * @param code error code related to error message
83 * @param fmt error message format
84 * @param ap arguments to error message format
86 * @ingroup hx509_error
90 hx509_set_error_stringv(hx509_context context, int flags, int code,
91 const char *fmt, va_list ap)
95 msg = calloc(1, sizeof(*msg));
97 hx509_clear_error_string(context);
101 if (vasprintf(&msg->msg, fmt, ap) == -1) {
102 hx509_clear_error_string(context);
108 if (flags & HX509_ERROR_APPEND) {
109 msg->next = context->error;
110 context->error = msg;
112 free_error_string(context->error);
113 context->error = msg;
118 * See hx509_set_error_stringv().
120 * @param context A hx509 context.
122 * - HX509_ERROR_APPEND appends the error string to the old messages
124 * @param code error code related to error message
125 * @param fmt error message format
126 * @param ... arguments to error message format
128 * @ingroup hx509_error
132 hx509_set_error_string(hx509_context context, int flags, int code,
133 const char *fmt, ...)
138 hx509_set_error_stringv(context, flags, code, fmt, ap);
143 * Get an error string from context associated with error_code.
145 * @param context A hx509 context.
146 * @param error_code Get error message for this error code.
148 * @return error string, free with hx509_free_error_string().
150 * @ingroup hx509_error
154 hx509_get_error_string(hx509_context context, int error_code)
156 struct rk_strpool *p = NULL;
157 hx509_error msg = context->error;
159 if (msg == NULL || msg->code != error_code) {
163 cstr = com_right(context->et_list, error_code);
166 cstr = strerror(error_code);
169 if (asprintf(&str, "<unknown error: %d>", error_code) == -1)
174 for (msg = context->error; msg; msg = msg->next)
175 p = rk_strpoolprintf(p, "%s%s", msg->msg,
176 msg->next != NULL ? "; " : "");
178 return rk_strpoolcollect(p);
182 * Free error string returned by hx509_get_error_string().
184 * @param str error string to free.
186 * @ingroup hx509_error
190 hx509_free_error_string(char *str)
196 * Print error message and fatally exit from error code
198 * @param context A hx509 context.
199 * @param exit_code exit() code from process.
200 * @param error_code Error code for the reason to exit.
201 * @param fmt format string with the exit message.
202 * @param ... argument to format string.
204 * @ingroup hx509_error
208 hx509_err(hx509_context context, int exit_code,
209 int error_code, const char *fmt, ...)
216 vasprintf(&str, fmt, ap);
218 msg = hx509_get_error_string(context, error_code);
222 errx(exit_code, "%s: %s", str, msg);