Handle base error codes

README.md

@@ -34,7 +34,6 @@ make
 - Make deleting from mylist possible, with
   - Name regexes,
   - If file is not found at a scan
-- Use api\_cmd style in api\_encrypt\_init
 - Buffer up mylistadd api cmds when waiting for ratelimit
 - Handle C-c gracefully at any time
 - Write -h page, and maybe a man page too

src/api.c

@@ -1,5 +1,6 @@
 #include <stdbool.h>
 #include <string.h>
+#include <stdarg.h>
 #include <assert.h>
 #include <printf.h>
 #include <time.h>
@@ -15,6 +16,7 @@
 #include "config.h"
 #include "ed2k.h"
 #include "util.h"
+#include "globals.h"
 
 /* Needed, bcuz of custom %B format */
 #pragma GCC diagnostic push
@@ -30,19 +32,13 @@
     #error "No monotonic clock"
 #endif
 
-#define MS_TO_TIMESPEC(ts, ms) { \
+static enum error api_cmd_base(char buffer[API_BUFSIZE],
-    ts->tv_sec = ms / 1000; \
+        struct api_result *res, const char *fmt, ...)
-    ts->tv_nsec = (ms % 1000) * 1000000; \
+__attribute__((format (printf, 3, 4)));
-}
-
-#define MS_TO_TIMESPEC_L(ts, ms) { \
-    ts.tv_sec = ms / 1000; \
-    ts.tv_nsec = (ms % 1000) * 1000000; \
-}
-
 static enum error api_cmd_logout(struct api_result *res);
 static enum error api_cmd_auth(const char *uname, const char *pass,
         struct api_result *res);
+static enum error api_cmd_encrypt(const char *uname, struct api_result *res);
 
 static bool api_authed = false;
 static char api_session[API_SMAXSIZE] = {0}; /* No escaping is needed */
@@ -51,12 +47,14 @@ static bool api_encryption = false;
 
 static pthread_t api_ka_thread = 0;
 static pthread_mutex_t api_work_mx;
-static bool api_ka_now = false; /* Are we doing keepalive now? */
 
 static struct timespec api_last_packet = {0}; /* Last packet time */
 static int32_t api_packet_count = 0; /* Only increment */
 //static int32_t api_fast_packet_count = 0; /* Increment or decrement */
 
+/* For some commands, we need a global retry counter */
+static int32_t api_g_retry_count = 0;
+
 static int api_escaped_string(FILE *io, const struct printf_info *info,
         const void *const *args)
 {
@@ -93,41 +91,44 @@ static int api_escaped_sring_info(const struct printf_info *info, size_t n,
 
 static enum error api_init_encrypt(const char *api_key, const char *uname)
 {
-    char buffer[API_BUFSIZE];
     MD5Context md5_ctx;
-    char *salt_start = buffer + 4 /* 209 [salt here] ... */, *salt_end;
+    struct api_result res;
-    ssize_t r_len, salt_len;
+    enum error err;
+    size_t salt_len;
 
-    if (net_send(buffer, snprintf(buffer, sizeof(buffer),
+    if (api_cmd_encrypt(uname, &res) != NOERR)
-                "ENCRYPT user=%s&type=1", uname)) == -1) {
-        return ERR_API_COMMFAIL;
-    }
-    r_len = net_read(buffer, sizeof(buffer));
-
-    if (strncmp(buffer, "209", 3) != 0) {
-        uio_error("We expected 209 response, but got: %.*s",
-                (int)r_len, buffer);
         return ERR_API_ENCRYPTFAIL;
-    }
 
-    salt_end = strchr(salt_start, ' ');
+    if (res.code != 209) {
-    if (!salt_end) {
+        err = ERR_API_ENCRYPTFAIL;
-        uio_error("Cannot find space after salt in response");
+        switch (res.code) {
-        return ERR_API_ENCRYPTFAIL;
+        case 309:
+            uio_error("You'r API key is not defined. Define it here: "
+                    "http://anidb.net/perl-bin/animedb.pl?show=profile");
+            break;
+        case 509:
+            uio_error("No such encryption type. Maybe client is outdated?");
+            break;
+        case 394:
+            uio_error("No user with name: '%s' found by AniDB", uname);
+            break;
+        default:
+            uio_error("Unknown encrypt failure: %ld", res.code);
+        }
+        return err;
     }
-    salt_len = salt_end - salt_start;
+    salt_len = strlen(res.encrypt.salt);
 
     md5Init(&md5_ctx);
     md5Update(&md5_ctx, (uint8_t*)api_key, strlen(api_key));
-    md5Update(&md5_ctx, (uint8_t*)salt_start, salt_len);
+    md5Update(&md5_ctx, (uint8_t*)res.encrypt.salt, salt_len);
     md5Finalize(&md5_ctx);
     memcpy(e_key, md5_ctx.digest, sizeof(e_key));
 
 #if 1
-    char *buffpos = buffer;
+    char bf[sizeof(e_key) * 2 + 1];
-    for (int i = 0; i < 16; i++)
+    util_byte2hex(e_key, sizeof(e_key), false, bf);
-        buffpos += sprintf(buffpos, "%02x", e_key[i]);
+    uio_debug("Encryption key is: '%s'", bf);
-    uio_debug("Encryption key is: '%s'", buffer);
 #endif
 
     api_encryption = true;
@@ -181,16 +182,29 @@ static size_t api_decrypt(char *buffer, size_t data_len)
     return ret_len;
 }
 
-static enum error api_auth(const char* uname, const char *passw)
+static enum error api_auth()
 {
     struct api_result res;
     enum error err = NOERR;
+    char **uname, **passw;
+
+    if (config_get("username", (void**)&uname) != NOERR) {
+        uio_error("Username is not specified, but it is required!");
+        return ERR_OPT_REQUIRED;
+    }
+    if (config_get("password", (void**)&passw) != NOERR) {
+        uio_error("Password is not specified, but it is required!");
+        return ERR_OPT_REQUIRED;
+    }
+    /*
+     * We could try passing in a session key, if we are executing
+     * a login in response to a nologin or inv session error code?
+     */
 
     if (!api_encryption)
         uio_warning("Logging in without encryption!");
-    if (api_cmd_auth(uname, passw, &res) != NOERR) {
+    if (api_cmd_auth(*uname, *passw, &res) != NOERR)
         return ERR_API_AUTH_FAIL;
-    }
 
     switch (res.code) {
     case 201:
@@ -213,12 +227,6 @@ static enum error api_auth(const char* uname, const char *passw)
             uio_error("Client is banned :( Reason: %s", res.auth.banned_reason);
             free(res.auth.banned_reason);
             break;
-        case 505:
-            uio_error("Illegal input or access denied");
-            break;
-        case 601:
-            uio_error("AniDB out of service");
-            break;
         default:
             uio_error("Unknown error: %hu", res.code);
             break;
@@ -296,13 +304,11 @@ void *api_keepalive_main(void *arg)
          * Could be replaced with a pthread_cleanup_push ? */
         pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
         pthread_mutex_lock(&api_work_mx);
-        api_ka_now = true;
 
         uio_debug("G'moooooning! Is it time to keep our special connection alive?");
 
         api_keepalive(&ka_time);
         uio_debug("Next wakey-wakey in %ld seconds", ka_time.tv_sec);
-        api_ka_now = false;
         pthread_mutex_unlock(&api_work_mx);
         pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
     }
@@ -328,7 +334,7 @@ enum error api_clock_init()
 enum error api_init(bool auth)
 {
     enum error err = NOERR;
-    const char **api_key, **uname, **passwd;
+    const char **api_key, **uname;
 
     err = api_clock_init();
     if (err != NOERR)
@@ -347,7 +353,8 @@ enum error api_init(bool auth)
         }
         err = api_init_encrypt(*api_key, *uname);
         if (err != NOERR) {
-            uio_error("Cannot init api encryption");
+            if (err != ERR_SHOULD_EXIT)
+                uio_error("Cannot init api encryption");
             goto fail;
         }
     }
@@ -361,26 +368,24 @@ enum error api_init(bool auth)
     }
 
     if (auth) {
-        if (config_get("username", (void**)&uname) != NOERR) {
+        pthread_mutexattr_t attr;
-            uio_error("Username is not specified, but it is required!");
+        int mxres;
-            err = ERR_OPT_REQUIRED;
+
-            goto fail;
+        err = api_auth();
-        }
-        if (config_get("password", (void**)&passwd) != NOERR) {
-            uio_error("Password is not specified, but it is required!");
-            err = ERR_OPT_REQUIRED;
-            goto fail;
-        }
-        err = api_auth(*uname, *passwd);
         if (err != NOERR)
             goto fail;
 
         /* Only do keep alive if we have a session */
-        if (pthread_mutex_init(&api_work_mx, NULL) != 0) {
+        pthread_mutexattr_init(&attr);
+        pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+        mxres = pthread_mutex_init(&api_work_mx, NULL);
+        pthread_mutexattr_destroy(&attr);
+        if (mxres != 0) {
             uio_error("Cannot create mutex");
             err = ERR_THRD;
             goto fail;
         }
+
         if (pthread_create(&api_ka_thread, NULL, api_keepalive_main, NULL) != 0) {
             uio_error("Cannot create api keepalive thread");
             err = ERR_THRD;
@@ -409,10 +414,12 @@ void api_free()
             uio_error("Cannot cancel api keepalive thread");
         } else {
             int je = pthread_join(api_ka_thread, NULL);
-            if (je != 0) {
+            if (je != 0)
                 uio_error("Cannot join api keepalive thread: %s",
                         strerror(je));
-            }
+            else
+                uio_debug("Keepalive thread ended");
+
             if (pthread_mutex_destroy(&api_work_mx) != 0)
                 uio_error("Cannot destroy api work mutex");
         }
@@ -473,21 +480,33 @@ static void api_ratelimit()
     }
 }
 
+/*
+ * Returns the written byte count
+ * Or -1 on error, and -2 if errno was EINTR
+ */
 static ssize_t api_send(char *buffer, size_t data_len, size_t buf_size)
 {
     ssize_t read_len;
+    int en;
 
     api_ratelimit();
     uio_debug("{Api}: Sending: %.*s", (int)data_len, buffer);
     if (api_encryption)
         data_len = api_encrypt(buffer, data_len);
 
-    if (net_send(buffer, data_len) == -1) {
+    en = net_send(buffer, data_len);
-        uio_error("Cannot send data: %s", strerror(errno));
+    if (en < 0)
-        return -1;
+        return en;
-    }
 
     read_len = net_read(buffer, buf_size);
+    if (read_len < 0) {
+        uio_error("!!! BAD PLACE EINTR !!!        report pls");
+        return read_len; /* This could lead so some problems if we also want to
+                            log out. If we hit this, the msg got sent, but we
+                            couldn't read the response. That means, in the
+                            logout call, this msg's data will be read
+                            Let's see if this ever comes up */
+    }
     api_ratelimit_sent();
 
     if (api_encryption)
@@ -558,26 +577,170 @@ static char *api_get_field_mod(char *buffer, int32_t field_num)
 }
 #endif
 
+/* Basically convert remote codes into local error codes */
+static enum error api_cmd_base_errorc(long code, char buffer[API_BUFSIZE])
+{
+    switch (code) {
+    case APICODE_ILLEGAL_INPUT_OR_ACCESS_DENIED:
+        uio_error("Got unretryable error code: %d", code);
+        return ERR_API_INVCOMM;
+    case APICODE_BANNED:
+        {
+            char *ls;
+            size_t ll;
+
+            api_get_line(buffer, 2, &ls, &ll);
+            uio_error("Banned: %.*s", (int)ll, ls);
+            return ERR_API_BANNED;
+        }
+    case APICODE_UNKNOWN_COMMAND:
+        uio_error("The sent command is unknown");
+        return ERR_API_CMD_UNK;
+    case APICODE_INTERNAL_SERVER_ERROR:
+        uio_error("Internal server error!");
+        return ERR_API_INT_SRV;
+    case APICODE_ANIDB_OUT_OF_SERVICE:
+        uio_error("AniDB is currently out of service");
+        return ERR_API_OOS;
+    case APICODE_SERVER_BUSY:
+        uio_warning("Server is busy rn, trying again later");
+        return ERR_API_SRV_BUSY;
+    case APICODE_TIMEOUT:
+        uio_debug("Timed out, retrying");
+        return ERR_API_TIMEOUT;
+    case APICODE_LOGIN_FIRST:
+        uio_error("This command required AUTH");
+        return ERR_API_NOLOGIN;
+    case APICODE_ACCESS_DENIED:
+        uio_error("Access is denied for this info");
+        return ERR_API_AXX_DENIED;
+    case APICODE_INVALID_SESSION:
+        uio_error("The login session is invalid");
+        return ERR_API_INV_SESSION;
+    default:
+        /* Not an error, or at least not a base error */
+        return NOERR;
+    }
+}
+
+/*
+ * Base for all api_cmd's. This will also execute the default
+ * error code handers, like 505, 555, 604...
+ * If success, res.code will be filled out
+ */
+static enum error api_cmd_base(char buffer[API_BUFSIZE], struct api_result *res,
+        const char *fmt, ...)
+{
+    int send_len;
+    enum error err = NOERR;
+    va_list ap;
+    int retry_count = 0;
+
+    va_start(ap, fmt);
+    send_len = vsnprintf(buffer, API_BUFSIZE, fmt, ap);
+    va_end(ap);
+
+    pthread_mutex_lock(&api_work_mx);
+    api_g_retry_count = 0;
+
+    while (retry_count < API_MAX_TRYAGAIN &&
+            api_g_retry_count < API_MAX_TRYAGAIN) {
+        long code;
+        ssize_t res_len = api_send(buffer, send_len, API_BUFSIZE);
+
+        if (res_len < 0) {
+            if (res_len == -2 && should_exit)
+                err = ERR_SHOULD_EXIT;
+            else
+                err = ERR_API_COMMFAIL;
+            goto end;
+        }
+
+        code = api_res_code(buffer);
+        if (code == -1) {
+            err = ERR_API_RESP_INVALID;
+            goto end;
+        }
+        res->code = code;
+
+        err = api_cmd_base_errorc(code, buffer);
+        if (err == ERR_API_OOS || err == ERR_API_SRV_BUSY ||
+                err == ERR_API_TIMEOUT) {
+            struct timespec ts;
+
+            MS_TO_TIMESPEC_L(ts, API_TRYAGAIN_TIME);
+            retry_count++;
+            uio_debug("Retry after %ld ms (%d/%d)", API_TRYAGAIN_TIME,
+                    retry_count, API_MAX_TRYAGAIN);
+            if (nanosleep(&ts, NULL) == -1) {
+                if (errno == EINTR && should_exit) {
+                    err = ERR_SHOULD_EXIT;
+                    goto end;
+                }
+            }
+            continue;
+        }
+
+        if (err == ERR_API_NOLOGIN || err == ERR_API_INV_SESSION) {
+            api_g_retry_count++;
+            if (api_g_retry_count < API_MAX_TRYAGAIN) {
+                uio_debug("Let's try loggin in agane");
+                api_authed = false; /* We got logged out probably */
+                err = api_auth(); /* -> will call this function */
+                if (api_g_retry_count < API_MAX_TRYAGAIN)
+                    continue;
+            }
+            break;
+        }
+
+        break;
+    };
+    if (retry_count >= API_MAX_TRYAGAIN ||
+            api_g_retry_count >= API_MAX_TRYAGAIN) {
+        uio_debug("Max retry count reached");
+        goto end;
+    }
+
+end:
+    pthread_mutex_unlock(&api_work_mx);
+    return err;
+}
+
+static enum error api_cmd_encrypt(const char *uname, struct api_result *res)
+{
+    char buffer[API_BUFSIZE];
+    enum error err;
+
+    /* Usernames can't contain '&' */
+    err = api_cmd_base(buffer, res, "ENCRYPT user=%s&type=1", uname);
+    if (err != NOERR)
+        return err;
+
+    if (res->code == APICODE_ENCRYPTION_ENABLED) {
+        char *fs;
+        size_t fl;
+        bool gfl = api_get_field(buffer, 2, &fs, &fl);
+
+        assert(gfl);
+        (void)gfl;
+        assert(sizeof(res->encrypt.salt) > fl);
+        memcpy(res->encrypt.salt, fs, fl);
+        res->encrypt.salt[fl] = '\0';
+    }
+
+    return err;
+}
+
 enum error api_cmd_version(struct api_result *res)
 {
-    char buffer[API_BUFSIZE] = "VERSION";
+    char buffer[API_BUFSIZE];
-    size_t res_len = api_send(buffer, strlen(buffer), sizeof(buffer));
+    enum error err;
-    long code;
-    enum error err = NOERR;
-    pthread_mutex_lock(&api_work_mx);
 
-    if (res_len == -1) {
+    err = api_cmd_base(buffer, res, "VERSION");
-        err = ERR_API_COMMFAIL;
+    if (err != NOERR)
-        goto end;
+        return err;
-    }
 
-    code = api_res_code(buffer);
+    if (res->code == APICODE_VERSION) {
-    if (code == -1) {
-        err = ERR_API_RESP_INVALID;
-        goto end;
-    }
-
-    if (code == 998) {
         char *ver_start;
         size_t ver_len;
         bool glr = api_get_line(buffer, 2, &ver_start, &ver_len);
@@ -588,37 +751,24 @@ enum error api_cmd_version(struct api_result *res)
         memcpy(res->version.version_str, ver_start, ver_len);
         res->version.version_str[ver_len] = '\0';
     }
-    res->code = (uint16_t)code;
     
-end:
-    pthread_mutex_unlock(&api_work_mx);
     return err;
 }
 
 static enum error api_cmd_auth(const char *uname, const char *pass,
         struct api_result *res)
 {
-    pthread_mutex_lock(&api_work_mx);
     char buffer[API_BUFSIZE];
-    long code;
+    enum error err;
-    size_t res_len = api_send(buffer, snprintf(buffer, sizeof(buffer),
-                "AUTH user=%s&pass=%B&protover=" API_VERSION "&client=caniadd&"
-                "clientver=" PROG_VERSION "&enc=UTF-8", uname, pass),
-            sizeof(buffer));
-    enum error err = NOERR;
 
-    if (res_len == -1) {
+    err = api_cmd_base(buffer, res, "AUTH user=%s&pass=%B&protover="
-        err = ERR_API_COMMFAIL;
+            API_VERSION "&client=caniadd&clientver=" PROG_VERSION
-        goto end;
+            "&enc=UTF-8", uname, pass);
-    }
+    if (err != NOERR)
+        return err;
 
-    code = api_res_code(buffer);
+    if (res->code == APICODE_LOGIN_ACCEPTED ||
-    if (code == -1) {
+            res->code == APICODE_LOGIN_ACCEPTED_NEW_VERSION) {
-        err = ERR_API_RESP_INVALID;
-        goto end;
-    }
-
-    if (code == 200 || code == 201) {
         char *sess;
         size_t sess_len;
         bool gfr = api_get_field(buffer, 2, &sess, &sess_len);
@@ -628,7 +778,7 @@ static enum error api_cmd_auth(const char *uname, const char *pass,
         assert(sess_len < sizeof(res->auth.session_key));
         memcpy(res->auth.session_key, sess, sess_len);
         res->auth.session_key[sess_len] = '\0';
-    } else if (code == 504) {
+    } else if (res->code == APICODE_CLIENT_BANNED) {
         char *reason;
         size_t reason_len;
         bool gfr = api_get_field(buffer, 5, &reason, &reason_len);
@@ -637,64 +787,32 @@ static enum error api_cmd_auth(const char *uname, const char *pass,
         (void)gfr;
         res->auth.banned_reason = strndup(reason, reason_len);
     }
-    res->code = (uint16_t)code;
 
-end:
-    pthread_mutex_unlock(&api_work_mx);
     return err;
 }
 
 static enum error api_cmd_logout(struct api_result *res)
 {
-    pthread_mutex_lock(&api_work_mx);
     char buffer[API_BUFSIZE];
-    size_t res_len = api_send(buffer, snprintf(buffer, sizeof(buffer),
+    enum error err;
-                "LOGOUT s=%s", api_session), sizeof(buffer));
-    long code;
-    enum error err = NOERR;
 
-    if (res_len == -1) {
+    err = api_cmd_base(buffer, res, "LOGOUT s=%s", api_session);
-        err = ERR_API_COMMFAIL;
+    if (err != NOERR)
-        goto end;
+        return err;
-    }
 
-    code = api_res_code(buffer);
-    if (code == -1) {
-        err = ERR_API_RESP_INVALID;
-        goto end;
-    }
-
-    res->code = (uint16_t)code;
-
-end:
-    pthread_mutex_unlock(&api_work_mx);
     return err;
 }
 
 enum error api_cmd_uptime(struct api_result *res)
 {
-    /* If mutex is not already locked from the keepalive thread */
-    /* Or we could use a recursive mutex? */
-    if (!api_ka_now)
-        pthread_mutex_lock(&api_work_mx);
     char buffer[API_BUFSIZE];
-    size_t res_len = api_send(buffer, snprintf(buffer, sizeof(buffer),
+    enum error err;
-                "UPTIME s=%s", api_session), sizeof(buffer));
-    long code;
-    enum error err = NOERR;
 
-    if (res_len == -1) {
+    err = api_cmd_base(buffer, res, "UPTIME s=%s", api_session);
-        err = ERR_API_COMMFAIL;
+    if (err != NOERR)
-        goto end;
+        return err;
-    }
 
-    code = api_res_code(buffer);
+    if (res->code == APICODE_UPTIME) {
-    if (code == -1) {
-        err = ERR_API_RESP_INVALID;
-        goto end;
-    }
-
-    if (code == 208) {
         char *ls;
         size_t ll;
         bool glf = api_get_line(buffer, 2, &ls, &ll);
@@ -704,11 +822,6 @@ enum error api_cmd_uptime(struct api_result *res)
         res->uptime.ms = strtol(ls, NULL, 10);
     }
 
-    res->code = (uint16_t)code;
-
-end:
-    if (!api_ka_now)
-        pthread_mutex_unlock(&api_work_mx);
     return err;
 }
 
@@ -717,30 +830,17 @@ enum error api_cmd_mylistadd(int64_t size, const uint8_t *hash,
 {
     char buffer[API_BUFSIZE];
     char hash_str[ED2K_HASH_SIZE * 2 + 1];
-    size_t res_len;
     enum error err = NOERR;
-    long code;
-    pthread_mutex_lock(&api_work_mx);
 
     util_byte2hex(hash, ED2K_HASH_SIZE, false, hash_str);
     /* Wiki says file size is 4 bytes, but no way that's true lol */
-    res_len = api_send(buffer, snprintf(buffer, sizeof(buffer),
+    err = api_cmd_base(buffer, res,
-                "MYLISTADD s=%s&size=%ld&ed2k=%s&state=%hu&viewed=%d",
+            "MYLISTADD s=%s&size=%ld&ed2k=%s&state=%hu&viewed=%d",
-                api_session, size, hash_str, ml_state, watched),
+            api_session, size, hash_str, ml_state, watched);
-            sizeof(buffer));
+    if (err != NOERR)
+        return err;
 
-    if (res_len == -1) {
+    if (res->code == APICODE_MYLIST_ENTRY_ADDED) {
-        err = ERR_API_COMMFAIL;
-        goto end;
-    }
-
-    code = api_res_code(buffer);
-    if (code == -1) {
-        err = ERR_API_RESP_INVALID;
-        goto end;
-    }
-
-    if (code == 210) {
         char *ls, id_str[12];
         size_t ll;
         bool glr = api_get_line(buffer, 2, &ls, &ll);
@@ -754,7 +854,7 @@ enum error api_cmd_mylistadd(int64_t size, const uint8_t *hash,
         /* Wiki says these id's are 4 bytes, which is untrue...
          * that page may be a little out of date (or they just
          * expect us to use common sense lmao */
-    } else if (code == 310) {
+    } else if (res->code == APICODE_FILE_ALREADY_IN_MYLIST) {
         /* {int4 lid}|{int4 fid}|{int4 eid}|{int4 aid}|{int4 gid}|
          * {int4 date}|{int2 state}|{int4 viewdate}|{str storage}|
          * {str source}|{str other}|{int2 filestate} */
@@ -802,10 +902,6 @@ enum error api_cmd_mylistadd(int64_t size, const uint8_t *hash,
         }
     }
 
-    res->code = (uint16_t)code;
-
-end:
-    pthread_mutex_unlock(&api_work_mx);
     return err;
 }
 

src/api.h

@@ -11,9 +11,11 @@
 #define API_BUFSIZE 1400
 /* Session key maximum size, including '\0' */
 #define API_SMAXSIZE 16
+/* Encryption salt maximum size, including '\0' */
+#define API_SALTMAXSIZE 16
+
 /* The session timeout in miliseconds */
 #define API_TIMEOUT 30 * 60 * 1000
-
 /* How many miliseconds to wait between sends */
 #define API_SENDWAIT 2 * 1000
 /* The number of packets that are exccempt from the ratelimit */
@@ -23,6 +25,163 @@
 /* After this many packets has been sent, use the longterm ratelimit */
 #define API_LONGTERM_PACKETS 100
 
+/* How much to wait between try agains? in ms */
+#define API_TRYAGAIN_TIME 60 * 1000
+#define API_MAX_TRYAGAIN 5
+
+enum api_code {
+    APICODE_LOGIN_ACCEPTED                           = 200,
+    APICODE_LOGIN_ACCEPTED_NEW_VERSION               = 201,
+    APICODE_LOGGED_OUT                               = 203,
+    APICODE_RESOURCE                                 = 205,
+    APICODE_STATS                                    = 206,
+    APICODE_TOP                                      = 207,
+    APICODE_UPTIME                                   = 208,
+    APICODE_ENCRYPTION_ENABLED                       = 209,
+    APICODE_MYLIST_ENTRY_ADDED                       = 210,
+    APICODE_MYLIST_ENTRY_DELETED                     = 211,
+    APICODE_ADDED_FILE                               = 214,
+    APICODE_ADDED_STREAM                             = 215,
+    APICODE_EXPORT_QUEUED                            = 217,
+    APICODE_EXPORT_CANCELLED                         = 218,
+    APICODE_ENCODING_CHANGED                         = 219,
+    APICODE_FILE                                     = 220,
+    APICODE_MYLIST                                   = 221,
+    APICODE_MYLIST_STATS                             = 222,
+    APICODE_WISHLIST                                 = 223,
+    APICODE_NOTIFICATION                             = 224,
+    APICODE_GROUP_STATUS                             = 225,
+    APICODE_WISHLIST_ENTRY_ADDED                     = 226,
+    APICODE_WISHLIST_ENTRY_DELETED                   = 227,
+    APICODE_WISHLIST_ENTRY_UPDATED                   = 228,
+    APICODE_MULTIPLE_WISHLIST                        = 229,
+    APICODE_ANIME                                    = 230,
+    APICODE_ANIME_BEST_MATCH                         = 231,
+    APICODE_RANDOM_ANIME                             = 232,
+    APICODE_ANIME_DESCRIPTION                        = 233,
+    APICODE_REVIEW                                   = 234,
+    APICODE_CHARACTER                                = 235,
+    APICODE_SONG                                     = 236,
+    APICODE_ANIMETAG                                 = 237,
+    APICODE_CHARACTERTAG                             = 238,
+    APICODE_EPISODE                                  = 240,
+    APICODE_UPDATED                                  = 243,
+    APICODE_TITLE                                    = 244,
+    APICODE_CREATOR                                  = 245,
+    APICODE_NOTIFICATION_ENTRY_ADDED                 = 246,
+    APICODE_NOTIFICATION_ENTRY_DELETED               = 247,
+    APICODE_NOTIFICATION_ENTRY_UPDATE                = 248,
+    APICODE_MULTIPLE_NOTIFICATION                    = 249,
+    APICODE_GROUP                                    = 250,
+    APICODE_CATEGORY                                 = 251,
+    APICODE_BUDDY_LIST                               = 253,
+    APICODE_BUDDY_STATE                              = 254,
+    APICODE_BUDDY_ADDED                              = 255,
+    APICODE_BUDDY_DELETED                            = 256,
+    APICODE_BUDDY_ACCEPTED                           = 257,
+    APICODE_BUDDY_DENIED                             = 258,
+    APICODE_VOTED                                    = 260,
+    APICODE_VOTE_FOUND                               = 261,
+    APICODE_VOTE_UPDATED                             = 262,
+    APICODE_VOTE_REVOKED                             = 263,
+    APICODE_HOT_ANIME                                = 265,
+    APICODE_RANDOM_RECOMMENDATION                    = 266,
+    APICODE_RANDOM_SIMILAR                           = 267,
+    APICODE_NOTIFICATION_ENABLED                     = 270,
+    APICODE_NOTIFYACK_SUCCESSFUL_MESSAGE             = 281,
+    APICODE_NOTIFYACK_SUCCESSFUL_NOTIFICATION        = 282,
+    APICODE_NOTIFICATION_STATE                       = 290,
+    APICODE_NOTIFYLIST                               = 291,
+    APICODE_NOTIFYGET_MESSAGE                        = 292,
+    APICODE_NOTIFYGET_NOTIFY                         = 293,
+    APICODE_SENDMESSAGE_SUCCESSFUL                   = 294,
+    APICODE_USER_ID                                  = 295,
+    APICODE_CALENDAR                                 = 297,
+
+    APICODE_PONG                                     = 300,
+    APICODE_AUTHPONG                                 = 301,
+    APICODE_NO_SUCH_RESOURCE                         = 305,
+    APICODE_API_PASSWORD_NOT_DEFINED                 = 309,
+    APICODE_FILE_ALREADY_IN_MYLIST                   = 310,
+    APICODE_MYLIST_ENTRY_EDITED                      = 311,
+    APICODE_MULTIPLE_MYLIST_ENTRIES                  = 312,
+    APICODE_WATCHED                                  = 313,
+    APICODE_SIZE_HASH_EXISTS                         = 314,
+    APICODE_INVALID_DATA                             = 315,
+    APICODE_STREAMNOID_USED                          = 316,
+    APICODE_EXPORT_NO_SUCH_TEMPLATE                  = 317,
+    APICODE_EXPORT_ALREADY_IN_QUEUE                  = 318,
+    APICODE_EXPORT_NO_EXPORT_QUEUED_OR_IS_PROCESSING = 319,
+    APICODE_NO_SUCH_FILE                             = 320,
+    APICODE_NO_SUCH_ENTRY                            = 321,
+    APICODE_MULTIPLE_FILES_FOUND                     = 322,
+    APICODE_NO_SUCH_WISHLIST                         = 323,
+    APICODE_NO_SUCH_NOTIFICATION                     = 324,
+    APICODE_NO_GROUPS_FOUND                          = 325,
+    APICODE_NO_SUCH_ANIME                            = 330,
+    APICODE_NO_SUCH_DESCRIPTION                      = 333,
+    APICODE_NO_SUCH_REVIEW                           = 334,
+    APICODE_NO_SUCH_CHARACTER                        = 335,
+    APICODE_NO_SUCH_SONG                             = 336,
+    APICODE_NO_SUCH_ANIMETAG                         = 337,
+    APICODE_NO_SUCH_CHARACTERTAG                     = 338,
+    APICODE_NO_SUCH_EPISODE                          = 340,
+    APICODE_NO_SUCH_UPDATES                          = 343,
+    APICODE_NO_SUCH_TITLES                           = 344,
+    APICODE_NO_SUCH_CREATOR                          = 345,
+    APICODE_NO_SUCH_GROUP                            = 350,
+    APICODE_NO_SUCH_CATEGORY                         = 351,
+    APICODE_BUDDY_ALREADY_ADDED                      = 355,
+    APICODE_NO_SUCH_BUDDY                            = 356,
+    APICODE_BUDDY_ALREADY_ACCEPTED                   = 357,
+    APICODE_BUDDY_ALREADY_DENIED                     = 358,
+    APICODE_NO_SUCH_VOTE                             = 360,
+    APICODE_INVALID_VOTE_TYPE                        = 361,
+    APICODE_INVALID_VOTE_VALUE                       = 362,
+    APICODE_PERMVOTE_NOT_ALLOWED                     = 363,
+    APICODE_ALREADY_PERMVOTED                        = 364,
+    APICODE_HOT_ANIME_EMPTY                          = 365,
+    APICODE_RANDOM_RECOMMENDATION_EMPTY              = 366,
+    APICODE_RANDOM_SIMILAR_EMPTY                     = 367,
+    APICODE_NOTIFICATION_DISABLED                    = 370,
+    APICODE_NO_SUCH_ENTRY_MESSAGE                    = 381,
+    APICODE_NO_SUCH_ENTRY_NOTIFICATION               = 382,
+    APICODE_NO_SUCH_MESSAGE                          = 392,
+    APICODE_NO_SUCH_NOTIFY                           = 393,
+    APICODE_NO_SUCH_USER                             = 394,
+    APICODE_CALENDAR_EMPTY                           = 397,
+    APICODE_NO_CHANGES                               = 399,
+
+    APICODE_NOT_LOGGED_IN                            = 403,
+    APICODE_NO_SUCH_MYLIST_FILE                      = 410,
+    APICODE_NO_SUCH_MYLIST_ENTRY                     = 411,
+    APICODE_MYLIST_UNAVAILABLE                       = 412,
+
+    APICODE_LOGIN_FAILED                             = 500,
+    APICODE_LOGIN_FIRST                              = 501,
+    APICODE_ACCESS_DENIED                            = 502,
+    APICODE_CLIENT_VERSION_OUTDATED                  = 503,
+    APICODE_CLIENT_BANNED                            = 504,
+    APICODE_ILLEGAL_INPUT_OR_ACCESS_DENIED           = 505,
+    APICODE_INVALID_SESSION                          = 506,
+    APICODE_NO_SUCH_ENCRYPTION_TYPE                  = 509,
+    APICODE_ENCODING_NOT_SUPPORTED                   = 519,
+    APICODE_BANNED                                   = 555,
+    APICODE_UNKNOWN_COMMAND                          = 598,
+
+    APICODE_INTERNAL_SERVER_ERROR                    = 600,
+    APICODE_ANIDB_OUT_OF_SERVICE                     = 601,
+    APICODE_SERVER_BUSY                              = 602,
+    APICODE_NO_DATA                                  = 603,
+    APICODE_TIMEOUT                                  = 604,
+    APICODE_API_VIOLATION                            = 666,
+
+    APICODE_PUSHACK_CONFIRMED                        = 701,
+    APICODE_NO_SUCH_PACKET_PENDING                   = 702,
+
+    APICODE_VERSION                                  = 998,
+};
+
 enum mylist_state {
     MYLIST_STATE_UNKNOWN = 0,
     MYLIST_STATE_INTERNAL,
@@ -54,6 +213,9 @@ struct api_auth_result {
         char *banned_reason;
     };
 };
+struct api_encrypt_result {
+    char salt[API_SALTMAXSIZE];
+};
 struct api_uptime_result {
     int32_t ms;
 };
@@ -78,6 +240,7 @@ struct api_result {
         struct api_auth_result auth;
         struct api_uptime_result uptime;
         e(mylistadd);
+        e(encrypt);
     };
 };
 #undef e

src/caniadd.c

@@ -1,17 +1,39 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <signal.h>
+#include <errno.h>
+#include <string.h>
 
 #include "config.h"
 #include "error.h"
 #include "uio.h"
 #include "cmd.h"
+#include "globals.h"
+
+bool should_exit = false;
+
+static void signal_handler(int signum, siginfo_t *info, void *ctx)
+{
+    should_exit = true;
+    printf("\033[0GGot C-c. Press again to force exit\n");
+}
 
 int main(int argc, char **argv)
 {
     int exit_code = EXIT_SUCCESS;
-    enum error err = config_parse(argc, argv);
+    enum error err;
+    struct sigaction sact = {
+        .sa_flags = SA_SIGINFO | SA_RESETHAND,
+        //.sa_flags = SA_SIGINFO,
+        .sa_sigaction = signal_handler,
+    };
 
+    if (sigaction(SIGINT, &sact, NULL) != 0) {
+        uio_error("Cannot set up signal handler: %s", strerror(errno));
+        return EXIT_FAILURE;
+    }
+
+    err = config_parse(argc, argv);
     if (err == ERR_OPT_EXIT)
         return EXIT_SUCCESS;
     else if (err != NOERR)
@@ -20,7 +42,9 @@ int main(int argc, char **argv)
     //config_dump();
 
     err = cmd_main();
-    if (err != NOERR)
+    if (err == ERR_SHOULD_EXIT)
+        uio_debug("Exiting as requested orz");
+    else if (err != NOERR)
         exit_code = EXIT_FAILURE;
 
     config_free();

src/ed2k_util.c

@@ -3,10 +3,12 @@
 #include <string.h>
 #include <errno.h>
 #include <ftw.h>
+#include <assert.h>
 
 #include "ed2k.h"
 #include "ed2k_util.h"
 #include "uio.h"
+#include "globals.h"
 
 static struct ed2k_util_opts l_opts;
 
@@ -15,11 +17,13 @@ static enum error ed2k_util_hash(const char *file_path, blksize_t blksize,
 {
     unsigned char buf[blksize], hash[ED2K_HASH_SIZE];
     struct ed2k_ctx ed2k;
+    enum error err;
     FILE *f;
     size_t read_len;
+    int en;
 
     if (l_opts.pre_hash_fn) {
-        enum error err = l_opts.pre_hash_fn(file_path, st, l_opts.data);
+        err = l_opts.pre_hash_fn(file_path, st, l_opts.data);
         if (err == ED2KUTIL_DONTHASH)
             return NOERR;
         else if (err != NOERR)
@@ -28,24 +32,52 @@ static enum error ed2k_util_hash(const char *file_path, blksize_t blksize,
 
     f = fopen(file_path, "rb");
     if (!f) {
-        uio_error("Failed to open file: %s (%s)", file_path, strerror(errno));
+        en = errno;
-        return ERR_ED2KUTIL_FS;
+
+        uio_error("Failed to open file: %s (%s)", file_path, strerror(en));
+        if (en == EINTR && should_exit)
+            return ERR_SHOULD_EXIT;
+        else
+            return ERR_ED2KUTIL_FS;
     }
 
     ed2k_init(&ed2k);
     read_len = fread(buf, 1, sizeof(buf), f);
-    while (read_len > 0) {
+    /* From my test, fread wont return anything special on signal interrupt */
+    while (read_len > 0 && !should_exit) {
         ed2k_update(&ed2k, buf, read_len);
         read_len = fread(buf, 1, sizeof(buf), f);
     }
-    // TODO check if eof or error
+    if (should_exit) {
+        err = ERR_SHOULD_EXIT;
+        goto fail;
+    }
+    if (ferror(f)) { /* Loop stopped bcuz of error, not EOF */
+        uio_error("Failure while reading file");
+        err = ERR_ED2KUTIL_FS;
+        goto fail;
+    }
+    assert(feof(f));
 
     ed2k_final(&ed2k, hash);
-    fclose(f);
+    if (fclose(f) != 0) {
+        en = errno;
+
+        uio_debug("Fclose failed: %s", strerror(en));
+        if (en == EINTR && should_exit)
+            return ERR_SHOULD_EXIT;
+        else
+            return ERR_ED2KUTIL_FS;
+    }
 
     if (l_opts.post_hash_fn)
         return l_opts.post_hash_fn(file_path, hash, st, l_opts.data);
     return NOERR;
+
+fail:
+    if (f) /* We can't get a 2nd interrupt now */
+        fclose(f);
+    return err;
 }
 
 static int ed2k_util_walk(const char *fpath, const struct stat *sb,

src/error.h

@@ -35,6 +35,16 @@
     E(ERR_API_LOGOUT) /* Logout failed */ \
     E(ERR_API_PRINTFFUNC) /* New printf function registration failed */ \
     E(ERR_API_CLOCK) /* Some error with clocks */ \
+    E(ERR_API_INVCOMM) /* Invalid command or command arguments */ \
+    E(ERR_API_BANNED) /* Got banned */ \
+    E(ERR_API_CMD_UNK) /* Unknown command */ \
+    E(ERR_API_INT_SRV) /* Internal server error */ \
+    E(ERR_API_OOS) /* AniDB is out of service rn */ \
+    E(ERR_API_SRV_BUSY) /* Server is too busy, try again later */ \
+    E(ERR_API_TIMEOUT) /* Timed out, delay and resubmit */ \
+    E(ERR_API_NOLOGIN) /* Login is required for this command */ \
+    E(ERR_API_AXX_DENIED) /* Access is denied */ \
+    E(ERR_API_INV_SESSION) /* Session is invalid */ \
 \
     E(ERR_CACHE_SQLITE) /* Generic sqlite error code */ \
     E(ERR_CACHE_EXISTS) /* Entry already exists, as determined by lid */ \
@@ -45,6 +55,8 @@
     E(ERR_THRD) /* Generic pthread error */ \
 \
     E(ERR_LIBEVENT) /* There are some problem with a libevent function */ \
+\
+    E(ERR_SHOULD_EXIT) /* Probably got a C-c, program should exit now */ \
     E(_ERR_COUNT) \
 
 

src/globals.h

@@ -0,0 +1,7 @@
+#ifndef _GLOBALS_H
+#define _GLOBALS_H
+#include <stdbool.h>
+
+extern bool should_exit;
+
+#endif /* _GLOBALS_H */

src/net.c

@@ -248,7 +248,11 @@ ssize_t net_send(const void *msg, size_t msg_len)
 {
     ssize_t w_len = send(net_socket, msg, msg_len, 0);
     if (w_len == -1) {
-        uio_error("{net} Send failed: %s", strerror(errno));
+        int en = errno;
+
+        uio_error("{net} Send failed: %s", strerror(en));
+        if (en == EINTR)
+            return -2;
         return -1;
     }
     return w_len;
@@ -258,8 +262,14 @@ ssize_t net_read(void* out_data, size_t read_size)
 {
     ssize_t read = recv(net_socket, out_data, read_size, 0);
     if (read == -1) {
+        int en = errno;
+
         uio_error("{net} Read failed: %s", strerror(errno));
+        if (en == EINTR)
+            return -2;
         return -1;
     }
+    if (read == read_size)
+        uio_warning("{net} Data may have been discarded!");
     return read;
 }

src/net.h

@@ -12,6 +12,8 @@ enum error net_init();
 
 /*
  * Send and read data to and from the api
+ * Returns the number of bytes sent/read or -1 on error
+ * If the error is EINTR, it returns -2
  */
 ssize_t net_send(const void *msg, size_t msg_len);
 ssize_t net_read(void *out_data, size_t read_size);

src/util.h

@@ -4,6 +4,16 @@
 #include <stddef.h>
 #include <stdbool.h>
 
+#define MS_TO_TIMESPEC(ts, ms) { \
+    ts->tv_sec = ms / 1000; \
+    ts->tv_nsec = (ms % 1000) * 1000000; \
+}
+
+#define MS_TO_TIMESPEC_L(ts, ms) { \
+    ts.tv_sec = ms / 1000; \
+    ts.tv_nsec = (ms % 1000) * 1000000; \
+}
+
 /*
  * Convert bytes to a hex string
  * out needs to be at least (bytes_len * 2 + 1) bytes