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/*
* Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Development of this code funded by Astaro AG (http://www.astaro.com/)
*/
#include <nft.h>
#include <stdio.h>
#include <stdarg.h>
#include <netlink.h>
#include <gmputil.h>
#include <erec.h>
static const struct input_descriptor internal_indesc = {
.type = INDESC_INTERNAL,
.name = "internal",
};
const struct location internal_location = {
.indesc = &internal_indesc,
};
static const char * const error_record_names[] = {
[EREC_INFORMATIONAL] = NULL,
[EREC_WARNING] = "Warning",
[EREC_ERROR] = "Error"
};
void erec_add_location(struct error_record *erec, const struct location *loc)
{
assert(erec->num_locations < EREC_LOCATIONS_MAX);
erec->locations[erec->num_locations] = *loc;
erec->locations[erec->num_locations].indesc = loc->indesc ?
: &internal_indesc;
erec->num_locations++;
}
void erec_destroy(struct error_record *erec)
{
xfree(erec->msg);
xfree(erec);
}
__attribute__((format(printf, 3, 0)))
struct error_record *erec_vcreate(enum error_record_types type,
const struct location *loc,
const char *fmt, va_list ap)
{
struct error_record *erec;
erec = xmalloc(sizeof(*erec));
erec->type = type;
erec->num_locations = 0;
erec_add_location(erec, loc);
if (vasprintf(&erec->msg, fmt, ap) < 0)
erec->msg = NULL;
return erec;
}
__attribute__((format(printf, 3, 4)))
struct error_record *erec_create(enum error_record_types type,
const struct location *loc,
const char *fmt, ...)
{
struct error_record *erec;
va_list ap;
va_start(ap, fmt);
erec = erec_vcreate(type, loc, fmt, ap);
va_end(ap);
return erec;
}
void print_location(FILE *f, const struct input_descriptor *indesc,
const struct location *loc)
{
const struct input_descriptor *tmp;
const struct location *iloc;
if (indesc->location.indesc != NULL) {
const char *prefix = "In file included from";
iloc = &indesc->location;
for (tmp = iloc->indesc;
tmp != NULL && tmp->type != INDESC_INTERNAL;
tmp = iloc->indesc) {
fprintf(f, "%s %s:%u:%u-%u:\n", prefix,
tmp->name,
iloc->first_line, iloc->first_column,
iloc->last_column);
prefix = " from";
iloc = &tmp->location;
}
}
if (indesc->type != INDESC_BUFFER && indesc->name) {
fprintf(f, "%s:%u:%u-%u: ", indesc->name,
loc->first_line, loc->first_column,
loc->last_column);
}
}
const char *line_location(const struct input_descriptor *indesc,
const struct location *loc, char *buf, size_t bufsiz)
{
const char *line = NULL;
FILE *f;
f = fopen(indesc->name, "r");
if (!f)
return NULL;
if (!fseek(f, loc->line_offset, SEEK_SET) &&
fread(buf, 1, bufsiz - 1, f) > 0) {
*strchrnul(buf, '\n') = '\0';
line = buf;
}
fclose(f);
return line;
}
void erec_print(struct output_ctx *octx, const struct error_record *erec,
unsigned int debug_mask)
{
const struct location *loc = erec->locations;
const struct input_descriptor *indesc = loc->indesc;
const char *line = NULL;
char buf[1024] = {};
char *pbuf = NULL;
unsigned int i, end;
FILE *f;
int l;
switch (indesc->type) {
case INDESC_BUFFER:
case INDESC_CLI:
line = indesc->data;
*strchrnul(line, '\n') = '\0';
break;
case INDESC_STDIN:
line = indesc->data;
line += loc->line_offset;
*strchrnul(line, '\n') = '\0';
break;
case INDESC_FILE:
line = line_location(indesc, loc, buf, sizeof(buf));
break;
case INDESC_INTERNAL:
case INDESC_NETLINK:
break;
default:
BUG("invalid input descriptor type %u\n", indesc->type);
}
f = octx->error_fp;
if (indesc->type == INDESC_NETLINK) {
fprintf(f, "%s: ", indesc->name);
if (error_record_names[erec->type])
fprintf(f, "%s: ", error_record_names[erec->type]);
fprintf(f, "%s\n", erec->msg);
for (l = 0; l < (int)erec->num_locations; l++) {
loc = &erec->locations[l];
if (!loc->nle)
continue;
netlink_dump_expr(loc->nle, f, debug_mask);
}
return;
}
print_location(f, indesc, loc);
if (error_record_names[erec->type])
fprintf(f, "%s: ", error_record_names[erec->type]);
fprintf(f, "%s\n", erec->msg);
if (line) {
fprintf(f, "%s\n", line);
end = 0;
for (l = erec->num_locations - 1; l >= 0; l--) {
loc = &erec->locations[l];
end = max(end, loc->last_column);
}
pbuf = xmalloc(end + 1);
memset(pbuf, ' ', end + 1);
for (i = 0; i < end && line[i]; i++) {
if (line[i] == '\t')
pbuf[i] = '\t';
}
for (l = erec->num_locations - 1; l >= 0; l--) {
loc = &erec->locations[l];
for (i = loc->first_column ? loc->first_column - 1 : 0;
i < loc->last_column; i++)
pbuf[i] = l ? '~' : '^';
}
pbuf[end] = '\0';
fprintf(f, "%s", pbuf);
xfree(pbuf);
}
fprintf(f, "\n");
}
void erec_print_list(struct output_ctx *octx, struct list_head *list,
unsigned int debug_mask)
{
struct error_record *erec, *next;
list_for_each_entry_safe(erec, next, list, list) {
list_del(&erec->list);
erec_print(octx, erec, debug_mask);
erec_destroy(erec);
}
}
int __fmtstring(4, 5) __stmt_binary_error(struct eval_ctx *ctx,
const struct location *l1,
const struct location *l2,
const char *fmt, ...)
{
struct error_record *erec;
va_list ap;
va_start(ap, fmt);
erec = erec_vcreate(EREC_ERROR, l1, fmt, ap);
if (l2 != NULL)
erec_add_location(erec, l2);
va_end(ap);
erec_queue(erec, ctx->msgs);
return -1;
}
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