diff options
Diffstat (limited to 'src/mds-colour.c')
| -rw-r--r-- | src/mds-colour.c | 1131 |
1 files changed, 569 insertions, 562 deletions
diff --git a/src/mds-colour.c b/src/mds-colour.c index f7a5722..6823f78 100644 --- a/src/mds-colour.c +++ b/src/mds-colour.c @@ -34,7 +34,7 @@ -#define MDS_COLOUR_VARS_VERSION 0 +#define MDS_COLOUR_VARS_VERSION 0 @@ -44,15 +44,14 @@ * * This tells the server-base how to behave */ -server_characteristics_t server_characteristics = - { - .require_privileges = 0, - .require_display = 1, - .require_respawn_info = 0, - .sanity_check_argc = 1, - .fork_for_safety = 0, - .danger_is_deadly = 0 - }; +server_characteristics_t server_characteristics = { + .require_privileges = 0, + .require_display = 1, + .require_respawn_info = 0, + .sanity_check_argc = 1, + .fork_for_safety = 0, + .danger_is_deadly = 0 +}; @@ -74,7 +73,7 @@ static int connected = 1; /** * Buffer for sending messages */ -static char* send_buffer = NULL; +static char *send_buffer = NULL; /** * The size allocated to `send_buffer` divided by `sizeof(char)` @@ -90,13 +89,13 @@ static colour_list_t colours; * Textual list of all colours that can be sent * to clients upon query. This list only includes names. */ -static char* colour_list_buffer_without_values = NULL; +static char *colour_list_buffer_without_values = NULL; /** * Textual list of all colours that can be sent * to clients upon query. This list include value. */ -static char* colour_list_buffer_with_values = NULL; +static char *colour_list_buffer_with_values = NULL; /** * The length of the message in `colour_list_buffer_without_values` @@ -121,8 +120,8 @@ static size_t colour_list_buffer_with_values_length = 0; * @param length:size_t The length of the message * @return :int Zero on success, -1 on error */ -#define full_send(message, length) \ - ((full_send)(socket_fd, message, length)) +#define full_send(message, length)\ + ((full_send)(socket_fd, message, length)) /** * Send an error message, message ID will be incremented @@ -145,10 +144,10 @@ static size_t colour_list_buffer_with_values_length = 0; * be omitted * @return Zero on success, -1 on error */ -#define send_error(recv_client_id, recv_message_id, recv_command, custom, errnum, message) \ - ((send_error)(recv_client_id, recv_message_id, recv_command, custom, errnum, \ - message, &send_buffer, &send_buffer_size, message_id, socket_fd) \ - ? -1 : ((message_id = message_id == INT32_MAX ? 0 : (message_id + 1)), 0)) +#define send_error(recv_client_id, recv_message_id, recv_command, custom, errnum, message)\ + ((send_error)(recv_client_id, recv_message_id, recv_command, custom, errnum,\ + message, &send_buffer, &send_buffer_size, message_id, socket_fd)\ + ? -1 : ((message_id = message_id == INT32_MAX ? 0 : (message_id + 1)), 0)) /** @@ -157,9 +156,10 @@ static size_t colour_list_buffer_with_values_length = 0; * * @return Non-zero on error */ -int __attribute__((const)) preinitialise_server(void) +int __attribute__((const)) +preinitialise_server(void) { - return 0; + return 0; } @@ -169,29 +169,30 @@ int __attribute__((const)) preinitialise_server(void) * * @return Non-zero on error */ -int initialise_server(void) +int +initialise_server(void) { - int stage = 0; - const char* const message = - "Command: intercept\n" - "Message ID: 0\n" - "Length: 62\n" - "\n" - "Command: list-colours\n" - "Command: get-colour\n" - "Command: set-colour\n"; - - fail_if (full_send(message, strlen(message))); - fail_if (server_initialised() < 0); stage++;; - fail_if (colour_list_create(&colours, 64) < 0); stage++; - fail_if (mds_message_initialise(&received)); - - return 0; - fail: - xperror(*argv); - if (stage >= 2) colour_list_destroy(&colours); - if (stage >= 1) mds_message_destroy(&received); - return 1; + int stage = 0; + const char* const message = + "Command: intercept\n" + "Message ID: 0\n" + "Length: 62\n" + "\n" + "Command: list-colours\n" + "Command: get-colour\n" + "Command: set-colour\n"; + + fail_if (full_send(message, strlen(message))); + fail_if (server_initialised() < 0); stage++;; + fail_if (colour_list_create(&colours, 64) < 0); stage++; + fail_if (mds_message_initialise(&received)); + + return 0; +fail: + xperror(*argv); + if (stage >= 2) colour_list_destroy(&colours); + if (stage >= 1) mds_message_destroy(&received); + return 1; } @@ -201,20 +202,21 @@ int initialise_server(void) * * @return Non-zero on error */ -int postinitialise_server(void) +int +postinitialise_server(void) { - colours.freer = colour_list_entry_free; - colours.hasher = string_hash; - - if (connected) - return 0; - - fail_if (reconnect_to_display()); - connected = 1; - return 0; - fail: - mds_message_destroy(&received); - return 1; + colours.freer = colour_list_entry_free; + colours.hasher = string_hash; + + if (connected) + return 0; + + fail_if (reconnect_to_display()); + connected = 1; + return 0; +fail: + mds_message_destroy(&received); + return 1; } @@ -226,12 +228,13 @@ int postinitialise_server(void) * * @return The number of bytes that will be stored by `marshal_server` */ -size_t marshal_server_size(void) +size_t +marshal_server_size(void) { - size_t rc = 2 * sizeof(int) + sizeof(uint32_t); - rc += mds_message_marshal_size(&received); - rc += colour_list_marshal_size(&colours); - return rc; + size_t rc = 2 * sizeof(int) + sizeof(uint32_t); + rc += mds_message_marshal_size(&received); + rc += colour_list_marshal_size(&colours); + return rc; } @@ -241,20 +244,21 @@ size_t marshal_server_size(void) * @param state_buf The buffer for the marshalled data * @return Non-zero on error */ -int marshal_server(char* state_buf) +int +marshal_server(char *state_buf) { - buf_set_next(state_buf, int, MDS_COLOUR_VARS_VERSION); - buf_set_next(state_buf, int, connected); - buf_set_next(state_buf, uint32_t, message_id); - - mds_message_marshal(&received, state_buf); - state_buf += mds_message_marshal_size(&received) / sizeof(char*); - - colour_list_marshal(&colours, state_buf); - - mds_message_destroy(&received); - colour_list_destroy(&colours); - return 0; + buf_set_next(state_buf, int, MDS_COLOUR_VARS_VERSION); + buf_set_next(state_buf, int, connected); + buf_set_next(state_buf, uint32_t, message_id); + + mds_message_marshal(&received, state_buf); + state_buf += mds_message_marshal_size(&received) / sizeof(char*); + + colour_list_marshal(&colours, state_buf); + + mds_message_destroy(&received); + colour_list_destroy(&colours); + return 0; } @@ -268,27 +272,28 @@ int marshal_server(char* state_buf) * @param state_buf The marshalled data that as not been read already * @return Non-zero on error */ -int unmarshal_server(char* state_buf) +int +unmarshal_server(char *state_buf) { - int stage = 0; - - /* buf_get_next(state_buf, int, MDS_COLOUR_VARS_VERSION); */ - buf_next(state_buf, int, 1); - buf_get_next(state_buf, int, connected); - buf_get_next(state_buf, uint32_t, message_id); - - fail_if (mds_message_unmarshal(&received, state_buf)); - state_buf += mds_message_marshal_size(&received) / sizeof(char*); - stage++; - - fail_if (colour_list_unmarshal(&colours, state_buf)); - - return 0; - fail: - xperror(*argv); - if (stage >= 0) mds_message_destroy(&received); - if (stage >= 1) colour_list_destroy(&colours); - return -1; + int stage = 0; + + /* buf_get_next(state_buf, int, MDS_COLOUR_VARS_VERSION); */ + buf_next(state_buf, int, 1); + buf_get_next(state_buf, int, connected); + buf_get_next(state_buf, uint32_t, message_id); + + fail_if (mds_message_unmarshal(&received, state_buf)); + state_buf += mds_message_marshal_size(&received) / sizeof(char*); + stage++; + + fail_if (colour_list_unmarshal(&colours, state_buf)); + + return 0; +fail: + xperror(*argv); + if (stage >= 0) mds_message_destroy(&received); + if (stage >= 1) colour_list_destroy(&colours); + return -1; } @@ -298,9 +303,10 @@ int unmarshal_server(char* state_buf) * * @return Non-zero on error */ -int __attribute__((const)) reexec_failure_recover(void) +int __attribute__((const)) +reexec_failure_recover(void) { - return -1; + return -1; } @@ -309,60 +315,58 @@ int __attribute__((const)) reexec_failure_recover(void) * * @return Non-zero on error */ -int master_loop(void) +int +master_loop(void) { - int rc = 1, r; - - while (!reexecing && !terminating) - { - if (danger) - { - danger = 0; - free(send_buffer), send_buffer = NULL; - send_buffer_size = 0; - colour_list_pack(&colours); - free(colour_list_buffer_without_values), - colour_list_buffer_without_values = NULL; - free(colour_list_buffer_with_values), - colour_list_buffer_with_values = NULL; + int rc = 1, r; + + while (!reexecing && !terminating) { + if (danger) { + danger = 0; + free(send_buffer); + send_buffer = NULL; + send_buffer_size = 0; + colour_list_pack(&colours); + free(colour_list_buffer_without_values); + colour_list_buffer_without_values = NULL; + free(colour_list_buffer_with_values); + colour_list_buffer_with_values = NULL; + } + + if (!(r = mds_message_read(&received, socket_fd))) + if (!(r = handle_message())) + continue; + + if (r == -2) { + eprint("corrupt message received, aborting."); + goto done; + } else if (errno == EINTR) { + continue; + } else { + fail_if (errno != ECONNRESET); + } + + eprint("lost connection to server."); + mds_message_destroy(&received); + mds_message_initialise(&received); + connected = 0; + fail_if (reconnect_to_display()); + connected = 1; } - - if (r = mds_message_read(&received, socket_fd), r == 0) - if (r = handle_message(), r == 0) - continue; - - if (r == -2) - { - eprint("corrupt message received, aborting."); - goto done; + + rc = 0; + goto done; +fail: + xperror(*argv); +done: + if (rc || !reexecing) { + mds_message_destroy(&received); + colour_list_destroy(&colours); } - else if (errno == EINTR) - continue; - else - fail_if (errno != ECONNRESET); - - eprint("lost connection to server."); - mds_message_destroy(&received); - mds_message_initialise(&received); - connected = 0; - fail_if (reconnect_to_display()); - connected = 1; - } - - rc = 0; - goto done; - fail: - xperror(*argv); - done: - if (rc || !reexecing) - { - mds_message_destroy(&received); - colour_list_destroy(&colours); - } - free(send_buffer); - free(colour_list_buffer_without_values); - free(colour_list_buffer_with_values); - return rc; + free(send_buffer); + free(colour_list_buffer_without_values); + free(colour_list_buffer_with_values); + return rc; } @@ -371,61 +375,60 @@ int master_loop(void) * * @return Zero on success, -1 on error */ -int handle_message(void) +int +handle_message(void) { - const char* recv_command = NULL; - const char* recv_client_id = "0:0"; - const char* recv_message_id = NULL; - const char* recv_include_values = NULL; - const char* recv_name = NULL; - const char* recv_remove = NULL; - const char* recv_bytes = NULL; - const char* recv_red = NULL; - const char* recv_green = NULL; - const char* recv_blue = NULL; - size_t i; - -#define __get_header(storage, header) \ - (startswith(received.headers[i], header)) \ - storage = received.headers[i] + strlen(header) - - for (i = 0; i < received.header_count; i++) - { - if __get_header(recv_command, "Command: "); - else if __get_header(recv_client_id, "Client ID: "); - else if __get_header(recv_message_id, "Message ID: "); - else if __get_header(recv_include_values, "Include values: "); - else if __get_header(recv_name, "Name: "); - else if __get_header(recv_remove, "Remove: "); - else if __get_header(recv_bytes, "Bytes: "); - else if __get_header(recv_red, "Red: "); - else if __get_header(recv_green, "Green: "); - else if __get_header(recv_blue, "Blue: "); - } - + const char *recv_command = NULL; + const char *recv_client_id = "0:0"; + const char *recv_message_id = NULL; + const char *recv_include_values = NULL; + const char *recv_name = NULL; + const char *recv_remove = NULL; + const char *recv_bytes = NULL; + const char *recv_red = NULL; + const char *recv_green = NULL; + const char *recv_blue = NULL; + size_t i; + +#define __get_header(storage, header)\ + (startswith(received.headers[i], header))\ + storage = received.headers[i] + strlen(header) + + for (i = 0; i < received.header_count; i++) { + if __get_header(recv_command, "Command: "); + else if __get_header(recv_client_id, "Client ID: "); + else if __get_header(recv_message_id, "Message ID: "); + else if __get_header(recv_include_values, "Include values: "); + else if __get_header(recv_name, "Name: "); + else if __get_header(recv_remove, "Remove: "); + else if __get_header(recv_bytes, "Bytes: "); + else if __get_header(recv_red, "Red: "); + else if __get_header(recv_green, "Green: "); + else if __get_header(recv_blue, "Blue: "); + } + #undef __get_header - - if (recv_message_id == NULL) - { - eprint("received message without ID, ignoring, master server is misbehaving."); - return 0; - } - - if (recv_command == NULL) - return 0; /* How did that get here, no matter, just ignore it? */ - -#define t(expr) do { fail_if (expr); return 0; } while (0) - if (strequals(recv_command, "list-colours")) - t (handle_list_colours(recv_client_id, recv_message_id, recv_include_values)); - if (strequals(recv_command, "get-colour")) - t (handle_get_colour(recv_client_id, recv_message_id, recv_name)); - if (strequals(recv_command, "set-colour")) - t (handle_set_colour(recv_name, recv_remove, recv_bytes, recv_red, recv_green, recv_blue)); + + if (!recv_message_id) { + eprint("received message without ID, ignoring, master server is misbehaving."); + return 0; + } + + if (!recv_command) + return 0; /* How did that get here, no matter, just ignore it? */ + +#define t(expr) do { fail_if (expr); return 0; } while (0) + if (strequals(recv_command, "list-colours")) + t (handle_list_colours(recv_client_id, recv_message_id, recv_include_values)); + if (strequals(recv_command, "get-colour")) + t (handle_get_colour(recv_client_id, recv_message_id, recv_name)); + if (strequals(recv_command, "set-colour")) + t (handle_set_colour(recv_name, recv_remove, recv_bytes, recv_red, recv_green, recv_blue)); #undef t - - return 0; /* How did that get here, no matter, just ignore it? */ - fail: - return -1; + + return 0; /* How did that get here, no matter, just ignore it? */ +fail: + return -1; } @@ -436,31 +439,32 @@ int handle_message(void) * * @return Zero on success, -1 on error */ -static int create_colour_list_buffer_without_values(void) +static int +create_colour_list_buffer_without_values(void) { - size_t i, length = 1; - colour_list_entry_t* entry; - char* temp; - int saved_errno; - - foreach_hash_list_entry (colours, i, entry) - length += strlen(entry->key) + 1; - - fail_if (yrealloc(temp, colour_list_buffer_without_values, length, char)); - temp = colour_list_buffer_without_values; - colour_list_buffer_without_values_length = length - 1; - - *temp = '\0'; - foreach_hash_list_entry (colours, i, entry) - temp = stpcpy(temp, entry->key++), *temp++ = '\n'; - *temp = '\0'; - - return 0; - fail: - saved_errno = errno; - free(colour_list_buffer_without_values); - colour_list_buffer_without_values = NULL; - return errno = saved_errno, -1; + size_t i, length = 1; + colour_list_entry_t *entry; + char *temp; + int saved_errno; + + foreach_hash_list_entry (colours, i, entry) + length += strlen(entry->key) + 1; + + fail_if (yrealloc(temp, colour_list_buffer_without_values, length, char)); + temp = colour_list_buffer_without_values; + colour_list_buffer_without_values_length = length - 1; + + *temp = '\0'; + foreach_hash_list_entry (colours, i, entry) + temp = stpcpy(temp, entry->key++), *temp++ = '\n'; + *temp = '\0'; + + return 0; +fail: + saved_errno = errno; + free(colour_list_buffer_without_values); + colour_list_buffer_without_values = NULL; + return errno = saved_errno, -1; } @@ -471,36 +475,39 @@ static int create_colour_list_buffer_without_values(void) * * @return Zero on success, -1 on error */ -static int create_colour_list_buffer_with_values(void) +static int +create_colour_list_buffer_with_values(void) { - size_t i, length = 1; - ssize_t part_length; - colour_list_entry_t* entry; - char* temp; - int saved_errno; - - foreach_hash_list_entry (colours, i, entry) - snprintf(NULL, 0, "%i %"PRIu64" %"PRIu64" %"PRIu64" %s\n%zn", - entry->value.bytes, entry->value.red, entry->value.green, - entry->value.blue, entry->key, &part_length), - length += (size_t)part_length; - - fail_if (yrealloc(temp, colour_list_buffer_with_values, length, char)); - temp = colour_list_buffer_with_values; - colour_list_buffer_with_values_length = length - 1; - - foreach_hash_list_entry (colours, i, entry) - sprintf(temp, "%i %"PRIu64" %"PRIu64" %"PRIu64" %s\n%zn", - entry->value.bytes, entry->value.red, entry->value.green, - entry->value.blue, entry->key, &part_length), - temp += (size_t)part_length; - - return 0; - fail: - saved_errno = errno; - free(colour_list_buffer_with_values); - colour_list_buffer_with_values = NULL; - return errno = saved_errno, -1; + size_t i, length = 1; + ssize_t part_length; + colour_list_entry_t* entry; + char* temp; + int saved_errno; + + foreach_hash_list_entry (colours, i, entry) { + snprintf(NULL, 0, "%i %"PRIu64" %"PRIu64" %"PRIu64" %s\n%zn", + entry->value.bytes, entry->value.red, entry->value.green, + entry->value.blue, entry->key, &part_length); + length += (size_t)part_length; + } + + fail_if (yrealloc(temp, colour_list_buffer_with_values, length, char)); + temp = colour_list_buffer_with_values; + colour_list_buffer_with_values_length = length - 1; + + foreach_hash_list_entry (colours, i, entry) { + sprintf(temp, "%i %"PRIu64" %"PRIu64" %"PRIu64" %s\n%zn", + entry->value.bytes, entry->value.red, entry->value.green, + entry->value.blue, entry->key, &part_length); + temp += (size_t)part_length; + } + + return 0; +fail: + saved_errno = errno; + free(colour_list_buffer_with_values); + colour_list_buffer_with_values = NULL; + return errno = saved_errno, -1; } @@ -513,68 +520,65 @@ static int create_colour_list_buffer_with_values(void) * @param recv_include_values The value of the `Include values`-header, `NULL` if omitted * @return Zero on success, -1 on error */ -int handle_list_colours(const char* recv_client_id, const char* recv_message_id, - const char* recv_include_values) +int +handle_list_colours(const char *recv_client_id, const char *recv_message_id, const char *recv_include_values) { - int include_values = 0; - char* payload; - size_t payload_length; - size_t length; - char* temp; - - if (strequals(recv_client_id, "0:0")) - return eprint("got a query from an anonymous client, ignoring."), 0; - - if (recv_include_values == NULL) include_values = 0; - else if (strequals(recv_include_values, "yes")) include_values = 1; - else if (strequals(recv_include_values, "no")) include_values = 0; - else - { - fail_if (send_error(recv_client_id, recv_message_id, "list-colours", 0, EPROTO, NULL)); - return 0; - } - - if ((colour_list_buffer_with_values == NULL) && include_values) - fail_if (create_colour_list_buffer_with_values()); - else if ((colour_list_buffer_without_values == NULL) && !include_values) - fail_if (create_colour_list_buffer_without_values()); - - payload = include_values - ? colour_list_buffer_with_values - : colour_list_buffer_without_values; - - payload_length = include_values - ? colour_list_buffer_with_values_length - : colour_list_buffer_without_values_length; - - length = sizeof("To: \n" - "In response to: \n" - "Message ID: \n" - "Origin command: list-colours\n" - "\n") / sizeof(char); - length += strlen(recv_client_id) + strlen(recv_message_id) + 10 + payload_length; - - if (length > send_buffer_size) - { - fail_if (yrealloc(temp, send_buffer, length, char)); - send_buffer_size = length; - } - - sprintf(send_buffer, - "To: %s\n" - "In response to: %s\n" - "Message ID: %"PRIu32"\n" - "Origin command: list-colours\n" - "\n%zn", - recv_client_id, recv_message_id, message_id, - (ssize_t*)&length); - memcpy(send_buffer + length, payload, payload_length * sizeof(char)); - length += payload_length; - - fail_if (full_send(send_buffer, length)); - return 0; - fail: - return -1; + int include_values = 0; + char *payload; + size_t payload_length; + size_t length; + char *temp; + + if (strequals(recv_client_id, "0:0")) + return eprint("got a query from an anonymous client, ignoring."), 0; + + if (!recv_include_values) include_values = 0; + else if (strequals(recv_include_values, "yes")) include_values = 1; + else if (strequals(recv_include_values, "no")) include_values = 0; + else { + fail_if (send_error(recv_client_id, recv_message_id, "list-colours", 0, EPROTO, NULL)); + return 0; + } + + if ((colour_list_buffer_with_values == NULL) && include_values) + fail_if (create_colour_list_buffer_with_values()); + else if ((colour_list_buffer_without_values == NULL) && !include_values) + fail_if (create_colour_list_buffer_without_values()); + + payload = include_values + ? colour_list_buffer_with_values + : colour_list_buffer_without_values; + + payload_length = include_values + ? colour_list_buffer_with_values_length + : colour_list_buffer_without_values_length; + + length = sizeof("To: \n" + "In response to: \n" + "Message ID: \n" + "Origin command: list-colours\n" + "\n") / sizeof(char); + length += strlen(recv_client_id) + strlen(recv_message_id) + 10 + payload_length; + + if (length > send_buffer_size) { + fail_if (yrealloc(temp, send_buffer, length, char)); + send_buffer_size = length; + } + + sprintf(send_buffer, + "To: %s\n" + "In response to: %s\n" + "Message ID: %"PRIu32"\n" + "Origin command: list-colours\n" + "\n%zn", + recv_client_id, recv_message_id, message_id, (ssize_t*)&length); + memcpy(send_buffer + length, payload, payload_length * sizeof(char)); + length += payload_length; + + fail_if (full_send(send_buffer, length)); + return 0; +fail: + return -1; } @@ -587,63 +591,61 @@ int handle_list_colours(const char* recv_client_id, const char* recv_message_id, * @param recv_name The value of the `Name`-header, `NULL` if omitted * @return Zero on success, -1 on error */ -int handle_get_colour(const char* recv_client_id, const char* recv_message_id, const char* recv_name) +int +handle_get_colour(const char *recv_client_id, const char *recv_message_id, const char *recv_name) { - colour_t colour; - size_t length; - char* temp; - - if (strequals(recv_client_id, "0:0")) - return eprint("got a query from an anonymous client, ignoring."), 0; - - if (recv_name == NULL) - { - fail_if (send_error(recv_client_id, recv_message_id, "get-colour", 0, EPROTO, NULL)); - return 0; - } - - if (!colour_list_get(&colours, recv_name, &colour)) - { - fail_if (send_error(recv_client_id, recv_message_id, "get-colour", 1, -1, "not defined")); - return 0; - } - - length = sizeof("To: \n" - "In response to: \n" - "Message ID: \n" - "Origin command: get-colour\n" - "Bytes: \n" - "Red: \n" - "Green; \n" - "Blue: \n" - "\n") / sizeof(char); - length += strlen(recv_client_id) + strlen(recv_message_id) + 10 + 1 + 3 * 3 * (size_t)(colour.bytes); + colour_t colour; + size_t length; + char *temp; - if (length > send_buffer_size) - { - fail_if (yrealloc(temp, send_buffer, length, char)); - send_buffer_size = length; - } - - sprintf(send_buffer, - "To: %s\n" - "In response to: %s\n" - "Message ID: %"PRIu32"\n" - "Origin command: get-colour\n" - "Bytes: %i\n" - "Red: %"PRIu64"\n" - "Green; %"PRIu64"\n" - "Blue: %"PRIu64"\n" - "\n", - recv_client_id, recv_message_id, message_id, colour.bytes, - colour.red, colour.green, colour.blue); - - message_id = message_id == UINT32_MAX ? 0 : (message_id + 1); - - fail_if (full_send(send_buffer, (size_t)length)); - return 0; - fail: - return -1; + if (strequals(recv_client_id, "0:0")) + return eprint("got a query from an anonymous client, ignoring."), 0; + + if (!recv_name) { + fail_if (send_error(recv_client_id, recv_message_id, "get-colour", 0, EPROTO, NULL)); + return 0; + } + + if (!colour_list_get(&colours, recv_name, &colour)) { + fail_if (send_error(recv_client_id, recv_message_id, "get-colour", 1, -1, "not defined")); + return 0; + } + + length = sizeof("To: \n" + "In response to: \n" + "Message ID: \n" + "Origin command: get-colour\n" + "Bytes: \n" + "Red: \n" + "Green; \n" + "Blue: \n" + "\n") / sizeof(char); + length += strlen(recv_client_id) + strlen(recv_message_id) + 10 + 1 + 3 * 3 * (size_t)(colour.bytes); + + if (length > send_buffer_size) { + fail_if (yrealloc(temp, send_buffer, length, char)); + send_buffer_size = length; + } + + sprintf(send_buffer, + "To: %s\n" + "In response to: %s\n" + "Message ID: %"PRIu32"\n" + "Origin command: get-colour\n" + "Bytes: %i\n" + "Red: %"PRIu64"\n" + "Green: %"PRIu64"\n" + "Blue: %"PRIu64"\n" + "\n", + recv_client_id, recv_message_id, message_id, colour.bytes, + colour.red, colour.green, colour.blue); + + message_id = message_id == UINT32_MAX ? 0 : (message_id + 1); + + fail_if (full_send(send_buffer, (size_t)length)); + return 0; +fail: + return -1; } @@ -659,52 +661,52 @@ int handle_get_colour(const char* recv_client_id, const char* recv_message_id, c * @param recv_blue The value of the `Blue`-header, `NULL` if omitted * @return Zero on success, -1 on error */ -int handle_set_colour(const char* recv_name, const char* recv_remove, const char* recv_bytes, - const char* recv_red, const char* recv_green, const char* recv_blue) +int +handle_set_colour(const char *recv_name, const char *recv_remove, const char *recv_bytes, + const char *recv_red, const char *recv_green, const char *recv_blue) { - uint64_t limit = UINT64_MAX; - int remove_colour = 0; - colour_t colour; - int bytes; - - if (recv_remove == NULL) remove_colour = 0; - else if (strequals(recv_remove, "yes")) remove_colour = 1; - else if (strequals(recv_remove, "no")) remove_colour = 0; - else - return eprint("got an invalid value on the Remove-header, ignoring."), 0; - - if (recv_name == NULL) - return eprint("did not get all required headers, ignoring."), 0; - - if (remove_colour == 0) - { - if ((recv_bytes == NULL) || (recv_red == NULL) || (recv_green == NULL) || (recv_blue == NULL)) - return eprint("did not get all required headers, ignoring."), 0; - - if (strict_atoi(recv_bytes, &bytes, 1, 8)) - return eprint("got an invalid value on the Bytes-header, ignoring."), 0; - if ((bytes != 1) && (bytes != 2) && (bytes != 4) && (bytes != 8)) - return eprint("got an invalid value on the Bytes-header, ignoring."), 0; - - if (bytes < 8) - limit = (((uint64_t)1) << (bytes * 8)) - 1; - - colour.bytes = bytes; - if (strict_atou64(recv_red, &(colour.red), 0, limit)) - return eprint("got an invalid value on the Red-header, ignoring."), 0; - if (strict_atou64(recv_green, &(colour.green), 0, limit)) - return eprint("got an invalid value on the Green-header, ignoring."), 0; - if (strict_atou64(recv_blue, &(colour.blue), 0, limit)) - return eprint("got an invalid value on the Blue-header, ignoring."), 0; - - fail_if (set_colour(recv_name, &colour)); - } - else - fail_if (set_colour(recv_name, NULL)); - - return 0; - fail: - return -1; + uint64_t limit = UINT64_MAX; + int remove_colour = 0; + colour_t colour; + int bytes; + + if (!recv_remove) remove_colour = 0; + else if (strequals(recv_remove, "yes")) remove_colour = 1; + else if (strequals(recv_remove, "no")) remove_colour = 0; + else + return eprint("got an invalid value on the Remove-header, ignoring."), 0; + + if (!recv_name) + return eprint("did not get all required headers, ignoring."), 0; + + if (!remove_colour) { + if (!recv_bytes || !recv_red || !recv_green || !recv_blue) + return eprint("did not get all required headers, ignoring."), 0; + + if (strict_atoi(recv_bytes, &bytes, 1, 8)) + return eprint("got an invalid value on the Bytes-header, ignoring."), 0; + if ((bytes != 1) && (bytes != 2) && (bytes != 4) && (bytes != 8)) + return eprint("got an invalid value on the Bytes-header, ignoring."), 0; + + if (bytes < 8) + limit = ((uint64_t)1 << (bytes * 8)) - 1; + + colour.bytes = bytes; + if (strict_atou64(recv_red, &(colour.red), 0, limit)) + return eprint("got an invalid value on the Red-header, ignoring."), 0; + if (strict_atou64(recv_green, &(colour.green), 0, limit)) + return eprint("got an invalid value on the Green-header, ignoring."), 0; + if (strict_atou64(recv_blue, &(colour.blue), 0, limit)) + return eprint("got an invalid value on the Blue-header, ignoring."), 0; + + fail_if (set_colour(recv_name, &colour)); + } else { + fail_if (set_colour(recv_name, NULL)); + } + + return 0; +fail: + return -1; } @@ -715,13 +717,14 @@ int handle_set_colour(const char* recv_name, const char* recv_remove, const char * @param colour_b The other colour * @return 1 if the colours are equal, 0 otherwise */ -static inline int colourequals(const colour_t* colour_a, const colour_t* colour_b) +static inline int +colourequals(const colour_t *colour_a, const colour_t *colour_b) { - size_t rc = (size_t)(colour_a->bytes - colour_b->bytes); - rc |= colour_a->red - colour_b->red; - rc |= colour_a->green - colour_b->green; - rc |= colour_a->blue - colour_b->blue; - return !rc; + size_t rc = (size_t)(colour_a->bytes - colour_b->bytes); + rc |= colour_a->red - colour_b->red; + rc |= colour_a->green - colour_b->green; + rc |= colour_a->blue - colour_b->blue; + return !rc; } @@ -733,59 +736,57 @@ static inline int colourequals(const colour_t* colour_a, const colour_t* colour_ * @return Zero on success, -1 on error, removal of * non-existent colour does not constitute an error */ -int set_colour(const char* name, const colour_t* colour) +int +set_colour(const char *name, const colour_t *colour) { - char* name_ = NULL; - int found; - colour_t old_colour; - int saved_errno; - - /* Find out whether the colour is already defined, - and retrieve its value. This is required so we - can broadcast the proper event. */ - found = colour_list_get(&colours, name, &old_colour); - - if (colour == NULL) - { - /* We have been asked to remove the colour. */ - - /* If the colour does not exist, there is no - point in removing it, and an event should - not be broadcasted. */ - if (found == 0) + char *name_ = NULL; + int found; + colour_t old_colour; + int saved_errno; + + /* Find out whether the colour is already defined, + and retrieve its value. This is required so we + can broadcast the proper event. */ + found = colour_list_get(&colours, name, &old_colour); + + if (!colour) { + /* We have been asked to remove the colour. */ + + /* If the colour does not exist, there is no + point in removing it, and an event should + not be broadcasted. */ + if (!found) + return 0; + + /* Remove the colour. */ + colour_list_remove(&colours, name); + + /* Broadcast update event. */ + fail_if (broadcast_update("colour-removed", name, NULL, "yes")); + } else { + /* We have been asked to add or modify the colour. */ + + /* `colour_list_put` will store the name of the colour, + so we have to make a copy that will not disappear. */ + fail_if (xstrdup_nn(name_, name)); + + /* Add or modify the colour. */ + fail_if (colour_list_put(&colours, name_, colour)); + + /* Broadcast update event. */ + if (!found) + fail_if (broadcast_update("colour-added", name, colour, "yes")); + else if (!colourequals(colour, &old_colour)) + fail_if (broadcast_update("colour-changed", name, colour, "yes")); + } + return 0; - - /* Remove the colour. */ - colour_list_remove(&colours, name); - - /* Broadcast update event. */ - fail_if (broadcast_update("colour-removed", name, NULL, "yes")); - } - else - { - /* We have been asked to add or modify the colour. */ - - /* `colour_list_put` will store the name of the colour, - so we have to make a copy that will not disappear. */ - fail_if (xstrdup_nn(name_, name)); - - /* Add or modify the colour. */ - fail_if (colour_list_put(&colours, name_, colour)); - - /* Broadcast update event. */ - if (found == 0) - fail_if (broadcast_update("colour-added", name, colour, "yes")); - else if (!colourequals(colour, &old_colour)) - fail_if (broadcast_update("colour-changed", name, colour, "yes")); - } - - return 0; - fail: - saved_errno = errno; - /* On failure, `colour_list_put` does not - free the colour name we gave it. */ - free(name_); - return errno = saved_errno, -1; +fail: + saved_errno = errno; + /* On failure, `colour_list_put` does not + free the colour name we gave it. */ + free(name_); + return errno = saved_errno, -1; } @@ -798,61 +799,63 @@ int set_colour(const char* name, const colour_t* colour) * @param last_update The value on the `Last update`-header * @return Zero on success, -1 on error */ -int broadcast_update(const char* event, const char* name, const colour_t* colour, const char* last_update) +int +broadcast_update(const char *event, const char *name, const colour_t *colour, const char *last_update) { - ssize_t part_length; - size_t length; - char* temp; - - free(colour_list_buffer_without_values), colour_list_buffer_without_values = NULL; - free(colour_list_buffer_with_values), colour_list_buffer_with_values = NULL; - - length = sizeof("Command: \nMessage ID: \nName: \nLast update: \n\n") / sizeof(char) - 1; - length += strlen(event) + 10 + strlen(name) + strlen(last_update); - - if (colour != NULL) - { - length += sizeof("Bytes: \nRed: \nBlue: \nGreen: \n") / sizeof(char) - 1; - length += 1 + 3 * 3 * (size_t)(colour->bytes); - } - - if (++length > send_buffer_size) - { - fail_if (yrealloc(temp, send_buffer, length, char)); - send_buffer_size = length; - } - - length = 0; - - sprintf(send_buffer + length, - "Command: %s\n" - "Message ID: %"PRIu32"\n" - "Name: %s\n%zn", - event, message_id, name, &part_length), - length += (size_t)part_length; - - if (colour != NULL) - sprintf(send_buffer + length, - "Bytes: %i\n" - "Red: %"PRIu64"\n" - "Blue: %"PRIu64"\n" - "Green: %"PRIu64"\n%zn", - colour->bytes, colour->red, colour->green, - colour->blue, &part_length), - length += (size_t)part_length; - - sprintf(send_buffer + length, - "Last update: %s\n" - "\n%zn", - last_update, &part_length), - length += (size_t)part_length; - - message_id = message_id == UINT32_MAX ? 0 : (message_id + 1); - - fail_if (full_send(send_buffer, length)); - return 0; - fail: - return -1; + ssize_t part_length; + size_t length; + char *temp; + + free(colour_list_buffer_without_values); + colour_list_buffer_without_values = NULL; + free(colour_list_buffer_with_values); + colour_list_buffer_with_values = NULL; + + length = sizeof("Command: \nMessage ID: \nName: \nLast update: \n\n") / sizeof(char) - 1; + length += strlen(event) + 10 + strlen(name) + strlen(last_update); + + if (colour) { + length += sizeof("Bytes: \nRed: \nBlue: \nGreen: \n") / sizeof(char) - 1; + length += 1 + 3 * 3 * (size_t)(colour->bytes); + } + + if (++length > send_buffer_size) { + fail_if (yrealloc(temp, send_buffer, length, char)); + send_buffer_size = length; + } + + length = 0; + + sprintf(send_buffer + length, + "Command: %s\n" + "Message ID: %"PRIu32"\n" + "Name: %s\n%zn", + event, message_id, name, &part_length); + length += (size_t)part_length; + + if (colour) { + sprintf(send_buffer + length, + "Bytes: %i\n" + "Red: %"PRIu64"\n" + "Blue: %"PRIu64"\n" + "Green: %"PRIu64"\n%zn", + colour->bytes, colour->red, colour->green, + colour->blue, &part_length); + length += (size_t)part_length; + } + + sprintf(send_buffer + length, + "Last update: %s\n" + "\n%zn", + last_update, &part_length); + length += (size_t)part_length; + + message_id = message_id == UINT32_MAX ? 0 : (message_id + 1); + + fail_if (full_send(send_buffer, length)); + return 0; +fail: + return -1; } @@ -865,20 +868,20 @@ int broadcast_update(const char* event, const char* name, const colour_t* colour */ void received_info(int signo) { - SIGHANDLER_START; - size_t i; - colour_list_entry_t* entry; - (void) signo; - iprintf("next message ID: %" PRIu32, message_id); - iprintf("connected: %s", connected ? "yes" : "no"); - iprintf("send buffer size: %zu bytes", send_buffer_size); - iprint("DEFINED COLOURS (bytes red green blue name-hash name)"); - foreach_hash_list_entry (colours, i, entry) - iprintf("%i %"PRIu64" %"PRIu64" %"PRIu64" %zu %s", - entry->value.bytes, entry->value.red, entry->value.green, - entry->value.blue, entry->key_hash, entry->key); - iprint("END DEFINED COLOURS"); - SIGHANDLER_END; + SIGHANDLER_START; + size_t i; + colour_list_entry_t *entry; + iprintf("next message ID: %" PRIu32, message_id); + iprintf("connected: %s", connected ? "yes" : "no"); + iprintf("send buffer size: %zu bytes", send_buffer_size); + iprint("DEFINED COLOURS (bytes red green blue name-hash name)"); + foreach_hash_list_entry (colours, i, entry) + iprintf("%i %"PRIu64" %"PRIu64" %"PRIu64" %zu %s", + entry->value.bytes, entry->value.red, entry->value.green, + entry->value.blue, entry->key_hash, entry->key); + iprint("END DEFINED COLOURS"); + SIGHANDLER_END; + (void) signo; } @@ -889,9 +892,10 @@ void received_info(int signo) * @param key_b The second key, will never be `NULL` * @return Whether the keys are equal */ -static inline int colour_list_key_comparer(const char* key_a, const char* key_b) +static inline int +colour_list_key_comparer(const char *key_a, const char *key_b) { - return !strcmp(key_a, key_b); + return !strcmp(key_a, key_b); } @@ -901,9 +905,10 @@ static inline int colour_list_key_comparer(const char* key_a, const char* key_b) * @param entry The entry, will never be `NULL`, any only used entries will be passed * @return The marshal-size of the entry's key and value */ -static inline size_t colour_list_submarshal_size(const colour_list_entry_t* entry) +static inline size_t +colour_list_submarshal_size(const colour_list_entry_t *entry) { - return sizeof(colour_t) + (strlen(entry->key) + 1) * sizeof(char); + return sizeof(colour_t) + (strlen(entry->key) + 1) * sizeof(char); } @@ -914,13 +919,14 @@ static inline size_t colour_list_submarshal_size(const colour_list_entry_t* entr * @param data The buffer where the entry's key and value will be stored * @return The marshal-size of the entry's key and value */ -static inline size_t colour_list_submarshal(const colour_list_entry_t* entry, char* restrict data) +static inline size_t +colour_list_submarshal(const colour_list_entry_t *entry, char *restrict data) { - size_t n = (strlen(entry->key) + 1) * sizeof(char); - memcpy(data, &(entry->value), sizeof(colour_t)); - data += sizeof(colour_t) / sizeof(char); - memcpy(data, entry->key, n); - return sizeof(colour_t) + n; + size_t n = (strlen(entry->key) + 1) * sizeof(char); + memcpy(data, &(entry->value), sizeof(colour_t)); + data += sizeof(colour_t) / sizeof(char); + memcpy(data, entry->key, n); + return sizeof(colour_t) + n; } @@ -931,18 +937,19 @@ static inline size_t colour_list_submarshal(const colour_list_entry_t* entry, ch * @param data The buffer where the entry's key and value is stored * @return The number of read bytes, zero on error */ -static inline size_t colour_list_subunmarshal(colour_list_entry_t* entry, char* restrict data) +static inline size_t +colour_list_subunmarshal(colour_list_entry_t *entry, char *restrict data) { - size_t n = 0; - memcpy(&(entry->value), data, sizeof(colour_t)); - data += sizeof(colour_t) / sizeof(char); - while (data[n++]); - n *= sizeof(char); - fail_if (xbmalloc(entry->key, n)); - memcpy(entry->key, data, n); - return sizeof(colour_t) + n; - fail: - return 0; + size_t n = 0; + memcpy(&(entry->value), data, sizeof(colour_t)); + data += sizeof(colour_t) / sizeof(char); + while (data[n++]); + n *= sizeof(char); + fail_if (xbmalloc(entry->key, n)); + memcpy(entry->key, data, n); + return sizeof(colour_t) + n; +fail: + return 0; } @@ -951,8 +958,8 @@ static inline size_t colour_list_subunmarshal(colour_list_entry_t* entry, char* * * @param entry The entry */ -void colour_list_entry_free(colour_list_entry_t* entry) +void +colour_list_entry_free(colour_list_entry_t *entry) { - free(entry->key); + free(entry->key); } - |