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#define _POSIX_C_SOURCE 200809L
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static const char *
require_env(const char *name)
{
const char *value;
value = getenv(name);
if (value == NULL || value[0] == '\0') {
fprintf(stderr, "mock_sendmail: missing %s\n", name);
exit(111);
}
return value;
}
int
main(int argc, char *argv[])
{
const char *argv_path;
const char *stdin_path;
const char *exit_env;
FILE *argv_file;
FILE *stdin_file;
char buffer[4096];
size_t nread;
argv_path = require_env("RMAIL_SENDMAIL_LOG");
stdin_path = require_env("RMAIL_SENDMAIL_INPUT");
argv_file = fopen(argv_path, "w");
if (argv_file == NULL) {
fprintf(stderr, "mock_sendmail: fopen(%s): %s\n",
argv_path, strerror(errno));
return 111;
}
for (int i = 0; i < argc; i++) {
if (fprintf(argv_file, "%s\n", argv[i]) < 0) {
fprintf(stderr, "mock_sendmail: fprintf(%s): %s\n",
argv_path, strerror(errno));
fclose(argv_file);
return 111;
}
}
if (fclose(argv_file) != 0) {
fprintf(stderr, "mock_sendmail: fclose(%s): %s\n",
argv_path, strerror(errno));
return 111;
}
stdin_file = fopen(stdin_path, "w");
if (stdin_file == NULL) {
fprintf(stderr, "mock_sendmail: fopen(%s): %s\n",
stdin_path, strerror(errno));
return 111;
}
while ((nread = fread(buffer, 1, sizeof(buffer), stdin)) > 0) {
if (fwrite(buffer, 1, nread, stdin_file) != nread) {
fprintf(stderr, "mock_sendmail: fwrite(%s): %s\n",
stdin_path, strerror(errno));
fclose(stdin_file);
return 111;
}
}
if (ferror(stdin)) {
fprintf(stderr, "mock_sendmail: fread(stdin): %s\n",
strerror(errno));
fclose(stdin_file);
return 111;
}
if (fclose(stdin_file) != 0) {
fprintf(stderr, "mock_sendmail: fclose(%s): %s\n",
stdin_path, strerror(errno));
return 111;
}
exit_env = getenv("RMAIL_SENDMAIL_EXIT");
if (exit_env != NULL && exit_env[0] != '\0')
return (int)strtol(exit_env, NULL, 10);
return 0;
}
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