void edit_parameters(int mode, int argc, char **argv)
{
char *path;
EDIT_FILE *ep;
VSTREAM *src;
VSTREAM *dst;
VSTRING *buf = vstring_alloc(100);
VSTRING *key = vstring_alloc(10);
char *cp;
char *edit_key;
char *edit_val;
HTABLE *table;
struct cvalue {
char *value;
int found;
};
struct cvalue *cvalue;
HTABLE_INFO **ht_info;
HTABLE_INFO **ht;
int interesting;
const char *err;
/*
* Store command-line parameters for quick lookup.
*/
table = htable_create(argc);
while ((cp = *argv++) != 0) {
if (strchr(cp, '\n') != 0)
msg_fatal("-e or -# accepts no multi-line input");
while (ISSPACE(*cp))
cp++;
if (*cp == '#')
msg_fatal("-e or -# accepts no comment input");
if (mode & EDIT_MAIN) {
if ((err = split_nameval(cp, &edit_key, &edit_val)) != 0)
msg_fatal("%s: \"%s\"", err, cp);
} else if (mode & COMMENT_OUT) {
if (*cp == 0)
msg_fatal("-# requires non-blank parameter names");
if (strchr(cp, '=') != 0)
msg_fatal("-# requires parameter names only");
edit_key = mystrdup(cp);
trimblanks(edit_key, 0);
edit_val = 0;
} else {
msg_panic("edit_parameters: unknown mode %d", mode);
}
cvalue = (struct cvalue *) mymalloc(sizeof(*cvalue));
cvalue->value = edit_val;
cvalue->found = 0;
htable_enter(table, edit_key, (char *) cvalue);
}
/*
* Open a temp file for the result. This uses a deterministic name so we
* don't leave behind thrash with random names.
*/
set_config_dir();
path = concatenate(var_config_dir, "/", MAIN_CONF_FILE, (char *) 0);
if ((ep = edit_file_open(path, O_CREAT | O_WRONLY, 0644)) == 0)
msg_fatal("open %s%s: %m", path, EDIT_FILE_SUFFIX);
dst = ep->tmp_fp;
/*
* Open the original file for input.
*/
if ((src = vstream_fopen(path, O_RDONLY, 0)) == 0) {
/* OK to delete, since we control the temp file name exclusively. */
(void) unlink(ep->tmp_path);
msg_fatal("open %s for reading: %m", path);
}
/*
* Copy original file to temp file, while replacing parameters on the
* fly. Issue warnings for names found multiple times.
*/
#define STR(x) vstring_str(x)
interesting = 0;
while (vstring_get(buf, src) != VSTREAM_EOF) {
for (cp = STR(buf); ISSPACE(*cp) /* including newline */ ; cp++)
/* void */ ;
/* Copy comment, all-whitespace, or empty line. */
if (*cp == '#' || *cp == 0) {
vstream_fputs(STR(buf), dst);
}
/* Copy, skip or replace continued text. */
else if (cp > STR(buf)) {
if (interesting == 0)
vstream_fputs(STR(buf), dst);
else if (mode & COMMENT_OUT)
vstream_fprintf(dst, "#%s", STR(buf));
}
/* Copy or replace start of logical line. */
else {
vstring_strncpy(key, cp, strcspn(cp, " \t\r\n="));
cvalue = (struct cvalue *) htable_find(table, STR(key));
if ((interesting = !!cvalue) != 0) {
if (cvalue->found++ == 1)
msg_warn("%s: multiple entries for \"%s\"", path, STR(key));
if (mode & EDIT_MAIN)
vstream_fprintf(dst, "%s = %s\n", STR(key), cvalue->value);
else if (mode & COMMENT_OUT)
vstream_fprintf(dst, "#%s", cp);
else
msg_panic("edit_parameters: unknown mode %d", mode);
} else {
vstream_fputs(STR(buf), dst);
}
}
}
/*
* Generate new entries for parameters that were not found.
*/
if (mode & EDIT_MAIN) {
for (ht_info = ht = htable_list(table); *ht; ht++) {
cvalue = (struct cvalue *) ht[0]->value;
if (cvalue->found == 0)
vstream_fprintf(dst, "%s = %s\n", ht[0]->key, cvalue->value);
}
myfree((char *) ht_info);
}
/*
* When all is well, rename the temp file to the original one.
*/
if (vstream_fclose(src))
msg_fatal("read %s: %m", path);
if (edit_file_close(ep) != 0)
msg_fatal("close %s%s: %m", path, EDIT_FILE_SUFFIX);
/*
* Cleanup.
*/
myfree(path);
vstring_free(buf);
vstring_free(key);
htable_free(table, myfree);
}
void pcf_edit_master(int mode, int argc, char **argv)
{
const char *myname = "pcf_edit_master";
char *path;
EDIT_FILE *ep;
VSTREAM *src;
VSTREAM *dst;
VSTRING *line_buf = vstring_alloc(100);
VSTRING *parse_buf = vstring_alloc(100);
int lineno;
PCF_MASTER_ENT *new_entry;
VSTRING *full_entry_buf = vstring_alloc(100);
char *cp;
char *pattern;
int service_name_type_matched;
const char *err;
PCF_MASTER_EDIT_REQ *edit_reqs;
PCF_MASTER_EDIT_REQ *req;
int num_reqs = argc;
const char *edit_opts = "-Me, -Fe, -Pe, -X, or -#";
char *service_name;
char *service_type;
/*
* Sanity check.
*/
if (num_reqs <= 0)
msg_panic("%s: empty argument list", myname);
/*
* Preprocessing: split pattern=value, then split the pattern components.
*/
edit_reqs = (PCF_MASTER_EDIT_REQ *) mymalloc(sizeof(*edit_reqs) * num_reqs);
for (req = edit_reqs; *argv != 0; req++, argv++) {
req->match_count = 0;
req->raw_text = *argv;
cp = req->parsed_text = mystrdup(req->raw_text);
if (strchr(cp, '\n') != 0)
msg_fatal("%s accept no multi-line input", edit_opts);
while (ISSPACE(*cp))
cp++;
if (*cp == '#')
msg_fatal("%s accept no comment input", edit_opts);
/* Separate the pattern from the value. */
if (mode & PCF_EDIT_CONF) {
if ((err = split_nameval(cp, &pattern, &req->edit_value)) != 0)
msg_fatal("%s: \"%s\"", err, req->raw_text);
if ((mode & PCF_MASTER_PARAM)
&& req->edit_value[strcspn(req->edit_value, PCF_MASTER_BLANKS)])
msg_fatal("whitespace in parameter value: \"%s\"",
req->raw_text);
} else if (mode & (PCF_COMMENT_OUT | PCF_EDIT_EXCL)) {
if (strchr(cp, '=') != 0)
msg_fatal("-X or -# requires names without value");
pattern = cp;
trimblanks(pattern, 0);
req->edit_value = 0;
} else {
msg_panic("%s: unknown mode %d", myname, mode);
}
#define PCF_MASTER_MASK (PCF_MASTER_ENTRY | PCF_MASTER_FLD | PCF_MASTER_PARAM)
/*
* Split name/type or name/type/whatever pattern into components.
*/
switch (mode & PCF_MASTER_MASK) {
case PCF_MASTER_ENTRY:
if ((req->service_pattern =
pcf_parse_service_pattern(pattern, 2, 2)) == 0)
msg_fatal("-Me, -MX or -M# requires service_name/type");
break;
case PCF_MASTER_FLD:
if ((req->service_pattern =
pcf_parse_service_pattern(pattern, 3, 3)) == 0)
msg_fatal("-Fe or -FX requires service_name/type/field_name");
req->field_number =
pcf_parse_field_pattern(req->service_pattern->argv[2]);
if (pcf_is_magic_field_pattern(req->field_number))
msg_fatal("-Fe does not accept wild-card field name");
if ((mode & PCF_EDIT_CONF)
&& req->field_number < PCF_MASTER_FLD_CMD
&& req->edit_value[strcspn(req->edit_value, PCF_MASTER_BLANKS)])
msg_fatal("-Fe does not accept whitespace in non-command field");
break;
case PCF_MASTER_PARAM:
if ((req->service_pattern =
pcf_parse_service_pattern(pattern, 3, 3)) == 0)
msg_fatal("-Pe or -PX requires service_name/type/parameter");
req->param_pattern = req->service_pattern->argv[2];
if (PCF_IS_MAGIC_PARAM_PATTERN(req->param_pattern))
msg_fatal("-Pe does not accept wild-card parameter name");
if ((mode & PCF_EDIT_CONF)
&& req->edit_value[strcspn(req->edit_value, PCF_MASTER_BLANKS)])
msg_fatal("-Pe does not accept whitespace in parameter value");
break;
default:
msg_panic("%s: unknown edit mode %d", myname, mode);
}
}
/*
* Open a temp file for the result. This uses a deterministic name so we
* don't leave behind thrash with random names.
*/
pcf_set_config_dir();
path = concatenate(var_config_dir, "/", MASTER_CONF_FILE, (char *) 0);
if ((ep = edit_file_open(path, O_CREAT | O_WRONLY, 0644)) == 0)
msg_fatal("open %s%s: %m", path, EDIT_FILE_SUFFIX);
dst = ep->tmp_fp;
/*
* Open the original file for input.
*/
if ((src = vstream_fopen(path, O_RDONLY, 0)) == 0) {
/* OK to delete, since we control the temp file name exclusively. */
(void) unlink(ep->tmp_path);
msg_fatal("open %s for reading: %m", path);
}
/*
* Copy original file to temp file, while replacing service entries on
* the fly.
*/
service_name_type_matched = 0;
new_entry = 0;
lineno = 0;
while ((cp = pcf_next_cf_line(parse_buf, src, dst, &lineno)) != 0) {
vstring_strcpy(line_buf, STR(parse_buf));
/*
* Copy, skip or replace continued text.
*/
if (cp > STR(parse_buf)) {
if (service_name_type_matched == 0)
vstream_fputs(STR(line_buf), dst);
else if (mode & PCF_COMMENT_OUT)
vstream_fprintf(dst, "#%s", STR(line_buf));
}
/*
* Copy or replace (start of) logical line.
*/
else {
service_name_type_matched = 0;
/*
* Parse out the service name and type.
*/
if ((service_name = mystrtok(&cp, PCF_MASTER_BLANKS)) == 0
|| (service_type = mystrtok(&cp, PCF_MASTER_BLANKS)) == 0)
msg_fatal("file %s: line %d: specify service name and type "
"on the same line", path, lineno);
if (strchr(service_name, '='))
msg_fatal("file %s: line %d: service name syntax \"%s\" is "
"unsupported with %s", path, lineno, service_name,
edit_opts);
if (service_type[strcspn(service_type, "=/")] != 0)
msg_fatal("file %s: line %d: "
"service type syntax \"%s\" is unsupported with %s",
path, lineno, service_type, edit_opts);
/*
* Match each service pattern.
*/
for (req = edit_reqs; req < edit_reqs + num_reqs; req++) {
if (PCF_MATCH_SERVICE_PATTERN(req->service_pattern,
service_name,
service_type)) {
service_name_type_matched = 1; /* Sticky flag */
req->match_count += 1;
/*
* Generate replacement master.cf entries.
*/
if ((mode & PCF_EDIT_CONF)
|| ((mode & PCF_MASTER_PARAM) && (mode & PCF_EDIT_EXCL))) {
switch (mode & PCF_MASTER_MASK) {
/*
* Replace master.cf entry field or parameter
* value.
*/
case PCF_MASTER_FLD:
case PCF_MASTER_PARAM:
if (new_entry == 0) {
/* Gobble up any continuation lines. */
pcf_gobble_cf_line(full_entry_buf, line_buf,
src, dst, &lineno);
new_entry = (PCF_MASTER_ENT *)
mymalloc(sizeof(*new_entry));
if ((err = pcf_parse_master_entry(new_entry,
STR(full_entry_buf))) != 0)
msg_fatal("file %s: line %d: %s",
path, lineno, err);
}
if (mode & PCF_MASTER_FLD) {
pcf_edit_master_field(new_entry,
req->field_number,
req->edit_value);
} else {
pcf_edit_master_param(new_entry, mode,
req->param_pattern,
req->edit_value);
}
break;
/*
* Replace entire master.cf entry.
*/
case PCF_MASTER_ENTRY:
if (new_entry != 0)
pcf_free_master_entry(new_entry);
new_entry = (PCF_MASTER_ENT *)
mymalloc(sizeof(*new_entry));
if ((err = pcf_parse_master_entry(new_entry,
req->edit_value)) != 0)
msg_fatal("%s: \"%s\"", err, req->raw_text);
break;
default:
msg_panic("%s: unknown edit mode %d", myname, mode);
}
}
}
}
/*
* Pass through or replace the current input line.
*/
if (new_entry) {
pcf_print_master_entry(dst, PCF_FOLD_LINE, new_entry);
pcf_free_master_entry(new_entry);
new_entry = 0;
} else if (service_name_type_matched == 0) {
vstream_fputs(STR(line_buf), dst);
} else if (mode & PCF_COMMENT_OUT) {
vstream_fprintf(dst, "#%s", STR(line_buf));
}
}
}
/*
* Postprocessing: when editing entire service entries, generate new
* entries for services not found. Otherwise (editing fields or
* parameters), "service not found" is a fatal error.
*/
for (req = edit_reqs; req < edit_reqs + num_reqs; req++) {
if (req->match_count == 0) {
if ((mode & PCF_MASTER_ENTRY) && (mode & PCF_EDIT_CONF)) {
new_entry = (PCF_MASTER_ENT *) mymalloc(sizeof(*new_entry));
if ((err = pcf_parse_master_entry(new_entry, req->edit_value)) != 0)
msg_fatal("%s: \"%s\"", err, req->raw_text);
pcf_print_master_entry(dst, PCF_FOLD_LINE, new_entry);
pcf_free_master_entry(new_entry);
} else if ((mode & PCF_MASTER_ENTRY) == 0) {
msg_warn("unmatched service_name/type: \"%s\"", req->raw_text);
}
}
}
/*
* When all is well, rename the temp file to the original one.
*/
if (vstream_fclose(src))
msg_fatal("read %s: %m", path);
if (edit_file_close(ep) != 0)
msg_fatal("close %s%s: %m", path, EDIT_FILE_SUFFIX);
/*
* Cleanup.
*/
myfree(path);
vstring_free(line_buf);
vstring_free(parse_buf);
vstring_free(full_entry_buf);
for (req = edit_reqs; req < edit_reqs + num_reqs; req++) {
argv_free(req->service_pattern);
myfree(req->parsed_text);
}
myfree((char *) edit_reqs);
}
