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#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "pkg.h"
#include "utils.h"
/* returns the location of the cache file for the source for pkg, or NULL if not
* needed (eg git sources or local files in repo) */
static char *
source_get_cache(char *pkg, char *pkg_path, struct source *s, struct env *e) {
assert(s);
switch (s->type) {
case SRC_HTTP:
{
char *filepart = strrchr(s->remote, '/');
if (filepart == NULL)
die2(s->remote, "filepart of URL not found");
filepart++;
char *cache = concat(e->cac_dir, "/sources/", pkg, "/",
s->extract_dir ? s->extract_dir : "", filepart, NULL);
return cache;
}
case SRC_FILE:
{
char *f = concat(pkg_path, "/", s->remote, NULL);
return f;
}
default:
return NULL;
}
}
enum pkg_source_types
pkg_source_type(char *remote, char *pkg_path) {
if (strncmp("git+", remote, 4) == 0)
return SRC_GIT;
if (strncmp("http", remote, 4) == 0)
return SRC_HTTP;
if (strstr(remote, "://"))
die2(remote, "protocol not supported");
/* XXX: only relative files are supported. */
char *f = concat(pkg_path, "/", remote, NULL);
int ok = (access(f, F_OK) == 0);
free(f);
if (ok)
return SRC_FILE;
die2(remote, "invalid source");
}
struct pkg *
pkg_parse_sources(char *pkg, struct env *e) {
struct source **s = NULL;
char *pkg_path = find_pkg_path(pkg, e);
if (pkg_path == NULL)
die2(pkg, "not found");
mylog2(pkg, "Reading sources");
FILE *f = pkg_open_file(pkg_path, "sources", "r");
if (f == NULL) {
free(pkg_path);
if (errno == ENOENT) {
mylog2(pkg, "no sources file, skipping");
return NULL;
} else {
die2(pkg, "couldn't open sources file");
}
}
char *buf = NULL;
size_t bufn = 0;
ssize_t n;
int lineno = 0, needed = 0;
while ((n = getline(&buf, &bufn, f)) != -1) {
if (n == 0 || buf[0] == '#' || buf[0] == '\n')
continue;
lineno++;
struct source *new = calloc(1, sizeof(struct source));
if (new == NULL) die_perror("calloc");
array_t t = split(buf, " \t\n");
new->remote = t[0];
new->extract_dir = t[1];
free(t); /* just free t, not the strings in it */
new->type = pkg_source_type(new->remote, pkg_path);
new->cachefile = source_get_cache(pkg, pkg_path, new, e);
if (new->type == SRC_FILE || new->type == SRC_HTTP)
needed++;
/* add new to the list */
s = realloc(s, sizeof(struct source *) * lineno);
if (s == NULL)
die_perror("realloc");
s[lineno-1] = new;
}
fclose(f);
free(buf);
struct pkg *p = calloc(1, sizeof(struct pkg));
if (p == NULL)
die_perror("calloc");
p->pkg = pkg;
p->pkg_path = pkg_path;
p->n = lineno;
p->n_need_checksums = needed;
p->s = s;
return p;
}
void
pkg_free(struct pkg *p) {
if (p == NULL)
return;
for (size_t i = 0; i < p->n; i++) {
free(p->s[i]->remote);
free(p->s[i]->extract_dir);
free(p->s[i]->cachefile);
free(p->s[i]);
}
free(p->s);
free(p->pkg_path);
free(p);
}
char *
find_pkg_path(char *name, struct env *e) {
array_t full_path = arr_copy(e->kiss_path);
arr_append(&full_path, e->sys_db, -1, true);
array_t s = find_in_path(name, full_path, S_IFDIR, true, false);
char *pkg = NULL;
if (s != NULL)
pkg = s[0];
free(s);
arr_free(full_path);
return pkg;
}
FILE *
pkg_open_file(char *pkg_path, char *file, char *mode) {
char *s = concat(pkg_path, "/", file, NULL);
FILE *f = fopen(s, mode);
if (f == NULL)
return NULL;
free(s);
return f;
}
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