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authorAnton Luka Šijanec <anton@sijanec.eu>2022-12-11 21:21:20 +0100
committerAnton Luka Šijanec <anton@sijanec.eu>2022-12-11 21:21:20 +0100
commitcb207e2c31359a6c6259c86d05e474addf2476f0 (patch)
tree92168c070415d94848b74e1393cf25d5becf9ad7 /src/main.c
parentuntested for compilation, dht.c -- TODO: DNS+bootstrap (diff)
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Diffstat (limited to '')
-rw-r--r--src/main.c56
1 files changed, 54 insertions, 2 deletions
diff --git a/src/main.c b/src/main.c
index 70d12fb..c054e31 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,7 +1,59 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <error.h>
+#include <fcntl.h>
+#include <signal.h>
+#define S0(x) (x ? x : "")
#include <dht.c>
-int main (void) {
- struct dht * dht = dht_init();
+int main (int argc, char ** argv) {
+ int r = 0;
+ if (argc != 1+1)
+ error_at_line(1, 0, __FILE__, __LINE__, "%s configfile.ben", S0(argv[0]));
+ int cf = open(argv[1], O_RDWR | O_CLOEXEC | O_CREAT, 00664);
+ if (cf == -1)
+ error_at_line(2, errno, __FILE__, __LINE__, "open(%s)", argv[1]);
+ struct stat statbuf;
+ if (fstat(cf, &statbuf) == -1) {
+ error_at_line(0, errno, __FILE__, __LINE__, "fstat(cf, &statbuf)");
+ r = 3;
+ goto r;
+ }
+ char * cfr = NULL;
+ if (statbuf.st_size && !(cfr = mmap(NULL, statbuf.st_size, PROT_READ, MAP_SHARED, cf, 0))) {
+ error_at_line(0, errno, __FILE__, __LINE__, "mmap(NULL, %ld, PROT_READ, MAP_SHARED, cf, 0)", statbuf.st_size);
+ r = 4;
+ goto r;
+ }
+ struct bencoding * config = bdecode(cfr, statbuf.st_size, replace);
+ struct dht * dht = dht_init(config);
+ free_bencoding(config);
+ config = persistent(dht);
+ dht_free(dht);
+ if (cfr && munmap(cfr, statbuf.st_size) == -1) {
+ error_at_line(0, errno, __FILE__, __LINE__, "munmap(cf, %ld)", statbuf.st_size);
+ r = 105;
+ goto r;
+ }
+ cfr = NULL;
+ if (ftruncate(cf, (statbuf.st_size = bencode_length(config))) == -1) {
+ error_at_line(0, errno, __FILE__, __LINE__, "ftruncate(cf, %ld)", statbuf.st_size);
+ r = 106;
+ goto r;
+ }
+ if (!(cfr = mmap(NULL, statbuf.st_size, PROT_WRITE, MAP_SHARED, cf, 0))) {
+ error_at_line(0, errno, __FILE__, __LINE__, "mmap(NULL, %ld, PROT_READ, MAP_SHARED, cf, 0)", statbuf.st_size);
+ r = 107;
+ goto r;
+ }
+ bencode(cfr, config);
+ free_bencoding(config);
+ r:
+ if (cfr && munmap(cfr, statbuf.st_size) == -1)
+ error_at_line(0, errno, __FILE__, __LINE__, "munmap(cf, %ld)", statbuf.st_size);
+ if (close(cf) == -1)
+ error_at_line(0, errno, __FILE__, __LINE__, "close(cf)");
+ return r;
}