nkiss

commit d13b760aa41cf2b2ef105e5a5d6492351a377c1a
parent 2e1d543685a517d0fa26a843f8786ff425e2bedc
Author: Nihal Jere <nihal@nihaljere.xyz>
Date:   Sat, 20 Feb 2021 20:31:08 -0600

pkg.*: add pkg_checksums_load

This loads the checksums file into the source_t struct

Diffstat:
M
Makefile
 | 
2
+-
M
pkg.c
 | 
35
+++++++++++++++++++++++++++++++++++
M
pkg.h
 | 
3
+++

3 files changed, 39 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
@@ -1,2 +1,2 @@
 all:
-	c99 -Wall -Werror http.c kiss.c pkg.c util.c -ltls
+	c99 -Wall -Werror http.c kiss.c pkg.c sha256.c util.c -ltls
diff --git a/pkg.c b/pkg.c
@@ -3,12 +3,14 @@
 #include <fnmatch.h>
 #include <libgen.h>
 #include <stdlib.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
 
 #include "http.h"
 #include "pkg.h"
+#include "sha256.h"
 #include "util.h"
 
 void
@@ -106,6 +108,39 @@ pkg_sources(char *repo, char *name, struct source_t *sources)
     return i;
 }
 
+void pkg_checksums_load(char *repo, char *name, struct source_t *sources) {
+    char cpath[PATH_LEN], line[512], *p;
+    int i = 0;
+    FILE *cfile;
+
+    if (snprintf(cpath, PATH_LEN, "%s/%s/checksums", repo, name) > PATH_LEN)
+        die("%s: path %s too long", __func__, cpath);
+
+    if ((cfile = fopen(cpath, "r")) == NULL)
+        die("%s: failed to open checksums file for %s:", __func__, name);
+
+    while (fgets(line, 512, cfile) && sources[i].path[0] != '\0') {
+        if ((p = strchr(line, '\n')) != line + 2*HASH_LEN) {
+            fclose(cfile);
+            die("%s: line %d in checksums for %s is malformatted", __func__,
+                    i+1, name);
+        }
+
+        *p = '\0';
+
+        sha256_fromstr(sources[i].checksum, line);
+        i++;
+    }
+
+    if (fgets(line, 2, cfile) || sources[i].path[0] != '\0') {
+        fclose(cfile);
+        die("%s: line count mismatch between sources and checksums for %s",
+                __func__, name);
+    }
+
+    fclose(cfile);
+}
+
 void
 pkg_version(char *repo, char *name, char *ver)
 {
diff --git a/pkg.h b/pkg.h
@@ -1,3 +1,4 @@
+#define HASH_LEN 32
 #define KISS_INSTALLED "/var/db/kiss/installed"
 #define PKG_VERSION_MAX 256
 #define PKG_SOURCES_MAX 64
@@ -13,10 +14,12 @@ struct source_t {
     char loc[URL_LEN];
     char extr[PATH_LEN];
     char path[PATH_LEN];
+    char checksum[HASH_LEN];
 };
 
 void pkg_retrieve(struct source_t *sources, int count);
 int pkg_sources(char *repo, char *name, struct source_t *);
+void pkg_checksums_load(char *repo, char *name, struct source_t *);
 void pkg_version(char *repo, char *name, char *ver);
 void pkg_binpath(char *repo, char *name, char *binpath);
 int pkg_match(char *repo, char pkgs[][64], const char *pattern);