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#include "client.h"
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include "util.h"
#include "yyjson.h"
static ssize_t write_all(int fd, const char *buf, size_t len)
{
size_t off = 0;
while (off < len) {
ssize_t w = write(fd, buf + off, len - off);
if (w < 0) {
if (errno == EINTR)
continue;
return -1;
}
off += (size_t)w;
}
return (ssize_t)off;
}
int client_send_line(int fd, const char *line)
{
if (write_all(fd, line, strlen(line)) < 0)
return -1;
return write_all(fd, "\n", 1) < 0 ? -1 : 0;
}
char *client_read_line(int fd)
{
struct buf b;
buf_init(&b);
char chunk[4096];
for (;;) {
ssize_t r = read(fd, chunk, sizeof chunk);
if (r < 0) {
if (errno == EINTR)
continue;
buf_free(&b);
return NULL;
}
if (r == 0)
break;
unsigned char *nl = memchr(chunk, '\n', (size_t)r);
if (nl) {
buf_append(&b, chunk, (size_t)(nl - (unsigned char *)chunk));
break;
}
buf_append(&b, chunk, (size_t)r);
}
char *out = xmalloc(b.len + 1);
memcpy(out, b.p ? (char *)b.p : "", b.len);
out[b.len] = '\0';
buf_free(&b);
return out;
}
static int tcp_connect_addr(const char *addrport)
{
char host[256] = "127.0.0.1";
char port[16] = "8787";
const char *colon = strrchr(addrport, ':');
if (colon) {
size_t hl = (size_t)(colon - addrport);
if (hl < sizeof host) {
memcpy(host, addrport, hl);
host[hl] = '\0';
}
snprintf(port, sizeof port, "%s", colon + 1);
} else {
snprintf(port, sizeof port, "%s", addrport);
}
struct addrinfo hints, *res = NULL;
memset(&hints, 0, sizeof hints);
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
if (getaddrinfo(host, port, &hints, &res) != 0)
return -1;
int fd = -1;
for (struct addrinfo *ai = res; ai; ai = ai->ai_next) {
fd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if (fd < 0)
continue;
if (connect(fd, ai->ai_addr, ai->ai_addrlen) == 0)
break;
close(fd);
fd = -1;
}
freeaddrinfo(res);
return fd;
}
int client_connect(const char *target)
{
if (strncmp(target, "tcp:", 4) == 0)
return tcp_connect_addr(target + 4);
struct sockaddr_un sa;
memset(&sa, 0, sizeof sa);
sa.sun_family = AF_UNIX;
if (strlen(target) >= sizeof sa.sun_path) {
errno = ENAMETOOLONG;
return -1;
}
snprintf(sa.sun_path, sizeof sa.sun_path, "%s", target);
int fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd < 0)
return -1;
if (connect(fd, (struct sockaddr *)&sa, sizeof sa) != 0) {
close(fd);
return -1;
}
return fd;
}
char *client_make_request(const char *cmd, const char *session, int64_t org,
const char *args_json, const char *id)
{
yyjson_doc *adoc = NULL;
if (args_json) {
adoc = yyjson_read(args_json, strlen(args_json), 0);
if (!adoc || !yyjson_is_obj(yyjson_doc_get_root(adoc))) {
yyjson_doc_free(adoc);
return NULL;
}
}
yyjson_mut_doc *d = yyjson_mut_doc_new(NULL);
yyjson_mut_val *o = yyjson_mut_obj(d);
yyjson_mut_doc_set_root(d, o);
yyjson_mut_obj_add_int(d, o, "v", 1);
yyjson_mut_obj_add_strcpy(d, o, "id", id ? id : "cli");
yyjson_mut_obj_add_strcpy(d, o, "cmd", cmd);
if (session)
yyjson_mut_obj_add_strcpy(d, o, "session", session);
if (org > 0)
yyjson_mut_obj_add_int(d, o, "org", org);
if (adoc) {
yyjson_mut_val *args = yyjson_val_mut_copy(d, yyjson_doc_get_root(adoc));
yyjson_mut_obj_add_val(d, o, "args", args);
yyjson_doc_free(adoc);
}
char *s = yyjson_mut_write(d, 0, NULL);
yyjson_mut_doc_free(d);
return s;
}
char *client_make_login_args(const char *user, const char *password)
{
yyjson_mut_doc *d = yyjson_mut_doc_new(NULL);
yyjson_mut_val *o = yyjson_mut_obj(d);
yyjson_mut_doc_set_root(d, o);
yyjson_mut_obj_add_strcpy(d, o, "method", "password");
yyjson_mut_obj_add_strcpy(d, o, "username", user);
yyjson_mut_obj_add_strcpy(d, o, "password", password);
char *s = yyjson_mut_write(d, 0, NULL);
yyjson_mut_doc_free(d);
return s;
}
char *client_rpc(int fd, const char *cmd, const char *session, int64_t org,
const char *args_json)
{
char *req = client_make_request(cmd, session, org, args_json, "rpc");
if (!req)
return NULL;
int rc = client_send_line(fd, req);
free(req);
if (rc != 0)
return NULL;
return client_read_line(fd);
}
int client_login(int fd, const char *user, const char *password,
char **session_out, char **err_out)
{
*session_out = NULL;
*err_out = NULL;
char *args = client_make_login_args(user, password);
if (!args) {
*err_out = xstrdup("could not build login request");
return -1;
}
char *resp = client_rpc(fd, "session.open", NULL, 0, args);
free(args);
if (!resp) {
*err_out = xstrdup(strerror(errno));
return -1;
}
if (!client_ok(resp)) {
*err_out = resp;
return -1;
}
yyjson_doc *d = yyjson_read(resp, strlen(resp), 0);
yyjson_val *root = d ? yyjson_doc_get_root(d) : NULL;
yyjson_val *res = root ? yyjson_obj_get(root, "result") : NULL;
yyjson_val *s = res ? yyjson_obj_get(res, "session") : NULL;
if (!s || !yyjson_is_str(s)) {
*err_out = xstrdup("login response had no session");
yyjson_doc_free(d);
free(resp);
return -1;
}
*session_out = xstrdup(yyjson_get_str(s));
yyjson_doc_free(d);
return 0;
}
int client_ok(const char *response)
{
if (!response)
return 0;
yyjson_doc *d = yyjson_read(response, strlen(response), 0);
yyjson_val *ok = d ? yyjson_obj_get(yyjson_doc_get_root(d), "ok") : NULL;
int result = ok && yyjson_is_bool(ok) && yyjson_get_bool(ok);
yyjson_doc_free(d);
return result;
}
int client_session_from(const char *response, char *buf, unsigned long cap)
{
if (!response)
return -1;
yyjson_doc *d = yyjson_read(response, strlen(response), 0);
yyjson_val *root = d ? yyjson_doc_get_root(d) : NULL;
yyjson_val *res = root ? yyjson_obj_get(root, "result") : NULL;
yyjson_val *s = res ? yyjson_obj_get(res, "session") : NULL;
if (!s || !yyjson_is_str(s)) {
yyjson_doc_free(d);
return -1;
}
snprintf(buf, cap, "%s", yyjson_get_str(s));
yyjson_doc_free(d);
return 0;
}
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