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Diffstat (limited to '')
| -rw-r--r-- | src/state.c | 638 |
1 files changed, 0 insertions, 638 deletions
diff --git a/src/state.c b/src/state.c deleted file mode 100644 index ff4f0e9..0000000 --- a/src/state.c +++ /dev/null @@ -1,638 +0,0 @@ -/** - * coopgammad -- Cooperative gamma server - * Copyright (C) 2016 Mattias Andrée (maandree@kth.se) - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ -#include "state.h" -#include "util.h" - -#include <inttypes.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - - - -/** - * The name of the process - */ -char* restrict argv0; /* do not marshal */ - -/** - * The real pathname of the process's binary, - * `NULL` if `argv0` is satisfactory - */ -char* restrict argv0_real = NULL; - -/** - * Array of all outputs - */ -struct output* restrict outputs = NULL; - -/** - * The nubmer of elements in `outputs` - */ -size_t outputs_n = 0; - -/** - * The server socket's file descriptor - */ -int socketfd = -1; - -/** - * Has the process receive a signal - * telling it to re-execute? - */ -volatile sig_atomic_t reexec = 0; /* do not marshal */ - -/** - * Has the process receive a signal - * telling it to terminate? - */ -volatile sig_atomic_t terminate = 0; /* do not marshal */ - -/** - * Has the process receive a to - * disconnect from or reconnect to - * the site? 1 if disconnect, 2 if - * reconnect, 0 otherwise. - */ -volatile sig_atomic_t connection = 0; - -/** - * List of all client's file descriptors - * - * Unused slots, with index less than `connections_used`, - * should have the value -1 (negative) - */ -int* restrict connections = NULL; - -/** - * The number of elements allocated for `connections` - */ -size_t connections_alloc = 0; - -/** - * The index of the first unused slot in `connections` - */ -size_t connections_ptr = 0; - -/** - * The index of the last used slot in `connections`, plus 1 - */ -size_t connections_used = 0; - -/** - * The clients' connections' inbound-message buffers - */ -struct message* restrict inbound = NULL; - -/** - * The clients' connections' outbound-message buffers - */ -struct ring* restrict outbound = NULL; - -/** - * Is the server connect to the display? - * - * Set to true before the initial connection - */ -int connected = 1; - -/** - * The adjustment method, -1 for automatic - */ -int method = -1; - -/** - * The site's name, may be `NULL` - */ -char* restrict sitename = NULL; - -/** - * The libgamma site state - */ -libgamma_site_state_t site; /* do not marshal */ - -/** - * The libgamma partition states - */ -libgamma_partition_state_t* restrict partitions = NULL; /* do not marshal */ - -/** - * The libgamma CRTC states - */ -libgamma_crtc_state_t* restrict crtcs = NULL; /* do not marshal */ - -/** - * Preserve gamma ramps at priority 0? - */ -int preserve = 0; - - - -/** - * As part of a state dump, dump one or two gamma ramp-trios - * - * @param left The left ramps - * @param right The right ramps - * @param depth The gamma ramp type/depth - * @param have_right Print right ramps? - * @param indent Print indent - */ -static void ramps_dump(union gamma_ramps* left, union gamma_ramps* right, - signed depth, int have_right, const char* indent) -{ -#define STRINGISE(SIDE, CH, N, BUF) \ - do \ - if ((SIDE == NULL) || (SIDE->u8.CH == NULL)) \ - strcpy(BUF, "null"); \ - else if (i < N) \ - switch (depth) \ - { \ - case -2: snprintf(BUF, sizeof(BUF), "%lf", SIDE->d.CH[i]); break; \ - case -1: snprintf(BUF, sizeof(BUF), "%f", (double)(SIDE->f.CH[i])); break; \ - case 8: snprintf(BUF, sizeof(BUF), "%02" PRIx8, SIDE->u8.CH[i]); break; \ - case 16: snprintf(BUF, sizeof(BUF), "%04" PRIx16, SIDE->u16.CH[i]); break; \ - case 32: snprintf(BUF, sizeof(BUF), "%08" PRIx32, SIDE->u32.CH[i]); break; \ - case 64: snprintf(BUF, sizeof(BUF), "%16" PRIx64, SIDE->u64.CH[i]); break; \ - default: \ - strcpy(BUF, "corrupt state"); \ - break; \ - } \ - while (0) - - char lr[100], lg[100], lb[100], rr[100], rg[100], rb[100]; - size_t rn = left ? left->u8.red_size : right ? right->u8.red_size : 0; - size_t gn = left ? left->u8.green_size : right ? right->u8.green_size : 0; - size_t bn = left ? left->u8.blue_size : right ? right->u8.blue_size : 0; - size_t i, n = rn > gn ? rn : gn; - n = n > bn ? n : bn; - - for (i = 0; i < n; i++) - { - *lr = *lg = *lb = *rr = *rg = *rb = '\0'; - - STRINGISE(left, red, rn, lr); - STRINGISE(left, green, gn, lg); - STRINGISE(left, blue, bn, lb); - - if (have_right) - { - STRINGISE(right, red, rn, rr); - STRINGISE(right, green, gn, rg); - STRINGISE(right, blue, bn, rb); - } - - if (have_right) - fprintf(stderr, "%s%zu: %s, %s, %s :: %s, %s, %s\n", indent, i, lr, lg, lb, rr, rg, rb); - else - fprintf(stderr, "%s%zu: %s, %s, %s\n", indent, i, lr, lg, lb); - } -} - - -/** - * Dump the state to stderr - */ -void state_dump(void) -{ - size_t i, j; - fprintf(stderr, "argv0: %s\n", argv0 ? argv0 : "(null)"); - fprintf(stderr, "Realpath of argv0: %s\n", argv0_real ? argv0_real : "(null)"); - fprintf(stderr, "Calibrations preserved: %s\n", preserve ? "yes" : "no"); - fprintf(stderr, "Connected: %s\n", connected ? "yes" : "no"); - fprintf(stderr, "Socket FD: %i\n", socketfd); - fprintf(stderr, "Re-execution pending: %s\n", reexec ? "yes" : "no"); - fprintf(stderr, "Termination pending: %s\n", terminate ? "yes" : "no"); - if ((0 <= connection) && (connection <= 2)) - fprintf(stderr, "Pending connection change: %s\n", - connection == 0 ? "none" : connection == 1 ? "disconnect" : "reconnect"); - else - fprintf(stderr, "Pending connection change: %i (CORRUPT STATE)\n", connection); - fprintf(stderr, "Adjustment method: %i\n", method); - fprintf(stderr, "Site name: %s\n", sitename ? sitename : "(automatic)"); - fprintf(stderr, "Clients:\n"); - fprintf(stderr, " Next empty slot: %zu\n", connections_ptr); - fprintf(stderr, " Initialised slots: %zu\n", connections_used); - fprintf(stderr, " Allocated slots: %zu\n", connections_alloc); - if (connections == NULL) - fprintf(stderr, " File descriptor array is null\n"); - else - for (i = 0; i < connections_used; i++) - { - if (connections[i] < 0) - { - fprintf(stderr, " Slot %zu: empty\n", i); - continue; - } - fprintf(stderr, " Slot %zu:\n", i); - fprintf(stderr, " File descriptor: %i\n", connections[i]); - if (inbound == NULL) - fprintf(stderr, " Inbound message array is null\n"); - else - { - fprintf(stderr, " Inbound message:\n"); - fprintf(stderr, " Header array: %s\n", inbound[i].headers ? "non-null" : "null"); - fprintf(stderr, " Headers: %zu\n", inbound[i].header_count); - fprintf(stderr, " Payload buffer: %s\n", inbound[i].payload ? "non-null" : "null"); - fprintf(stderr, " Payload size: %zu\n", inbound[i].payload_size); - fprintf(stderr, " Payload write pointer: %zu\n", inbound[i].payload_ptr); - fprintf(stderr, " Message buffer: %s\n", inbound[i].buffer ? "non-null" : "null"); - fprintf(stderr, " Message buffer size: %zu\n", inbound[i].buffer_size); - fprintf(stderr, " Message buffer write pointer: %zu\n", inbound[i].buffer_ptr); - fprintf(stderr, " Read stage: %i\n", inbound[i].stage); - } - if (outbound == NULL) - fprintf(stderr, " Outbound message array is null\n"); - else - { - fprintf(stderr, " Ring buffer: %s\n", outbound[i].buffer ? "non-null" : "null"); - fprintf(stderr, " Head: %zu\n", outbound[i].end); - fprintf(stderr, " Tail: %zu\n", outbound[i].start); - fprintf(stderr, " Size: %zu\n", outbound[i].size); - } - } - fprintf(stderr, "Partition array: %s\n", partitions ? "non-null" : "null"); - fprintf(stderr, "CRTC array: %s\n", crtcs ? "non-null" : "null"); - fprintf(stderr, "Output:\n"); - fprintf(stderr, " Output count: %zu\n", outputs_n); - if (outputs == NULL) - fprintf(stderr, " Output array is null\n"); - else - for (i = 0; i < outputs_n; i++) - { - struct output* restrict out = outputs + i; - const char* str; - fprintf(stderr, " Output %zu:\n", i); - fprintf(stderr, " Depth: %i (%s)\n", out->depth, - out->depth == -1 ? "float" : - out->depth == -2 ? "double" : - out->depth == 8 ? "uint8_t" : - out->depth == 16 ? "uint16_t" : - out->depth == 32 ? "uint32_t" : - out->depth == 64 ? "uint64_t" : "CORRUPT STATE"); - fprintf(stderr, " Gamma supported: %s (%i)\n", - out->supported == LIBGAMMA_YES ? "yes" : - out->supported == LIBGAMMA_NO ? "no" : - out->supported == LIBGAMMA_MAYBE ? "maybe" : - "CORRUPT STATE", out->supported); - fprintf(stderr, " Name is EDID: %s\n", out->name_is_edid ? "yes" : "no"); - switch (out->colourspace) - { - case COLOURSPACE_UNKNOWN: str = "unknown"; break; - case COLOURSPACE_SRGB: str = "sRGB with explicit gamut"; break; - case COLOURSPACE_SRGB_SANS_GAMUT: str = "sRGB with implicit gamut (actually illegal)"; break; - case COLOURSPACE_RGB: str = "RGB other than sRGB, with unknown gamut"; break; - case COLOURSPACE_RGB_SANS_GAMUT: str = "RGB other than sRGB, with listed gamut"; break; - case COLOURSPACE_NON_RGB: str = "Non-RGB multicolour"; break; - case COLOURSPACE_GREY: str = "Monochrome or singlecolour scale"; break; - default: str = "CORRUPT STATE"; break; - } - fprintf(stderr, " Colourspace: %s (%i)\n", str, out->colourspace); - if ((out->colourspace == COLOURSPACE_SRGB) || (out->colourspace == COLOURSPACE_RGB)) - { - fprintf(stderr, " Red (x, y): (%u / 1024, %u / 1024)\n", out->red_x, out->red_y); - fprintf(stderr, " Green (x, y): (%u / 1024, %u / 1024)\n", out->green_x, out->green_y); - fprintf(stderr, " Blue (x, y): (%u / 1024, %u / 1024)\n", out->blue_x, out->blue_y); - fprintf(stderr, " White (x, y): (%u / 1024, %u / 1024)\n", out->white_x, out->white_y); - if (out->colourspace == COLOURSPACE_SRGB) - { - fprintf(stderr, " Expected red (x, y): (655 / 1024, 338 / 1024)\n"); - fprintf(stderr, " Expected green (x, y): (307 / 1024, 614 / 1024)\n"); - fprintf(stderr, " Expected blue (x, y): (154 / 1024, 61 / 1024)\n"); - fprintf(stderr, " Expected white (x, y): (320 / 1024, 337 / 1024)\n"); - } - } - if (out->supported) - { - fprintf(stderr, " Gamma ramp size:\n"); - fprintf(stderr, " Red: %zu stops\n", out->red_size); - fprintf(stderr, " Green: %zu stops\n", out->green_size); - fprintf(stderr, " Blue: %zu stops\n", out->blue_size); - fprintf(stderr, " Total: %zu bytes\n", out->ramps_size); - fprintf(stderr, " Name: %s\n", out->name ? out->name : "(null)"); - fprintf(stderr, " CRTC state: %s\n", out->crtc ? "non-null" : "null"); - fprintf(stderr, " Saved gamma ramps (stop: red, green, blue):\n"); - ramps_dump(&(out->saved_ramps), NULL, out->depth, 0, " "); - fprintf(stderr, " Filter table:\n"); - fprintf(stderr, " Filter count: %zu\n", out->table_size); - fprintf(stderr, " Slots allocated: %zu\n", out->table_alloc); - if (out->table_size > 0) - { - if (out->table_filters == NULL) - fprintf(stderr, " Filter table is null\n"); - if (out->table_sums == NULL) - fprintf(stderr, " Result table is null\n"); - } - for (j = 0; j < out->table_size; j++) - { - struct filter* restrict filter = out->table_filters ? out->table_filters + j : NULL; - fprintf(stderr, " Filter %zu:\n", j); - if (filter != NULL) - { - if (filter->lifespan == LIFESPAN_UNTIL_DEATH) - fprintf(stderr, " Client FD: %i\n", filter->client); - switch (filter->lifespan) - { - case LIFESPAN_REMOVE: str = "remove (ILLEGAL STATE)"; break; - case LIFESPAN_UNTIL_REMOVAL: str = "until-removal"; break; - case LIFESPAN_UNTIL_DEATH: str = "until-death"; break; - default: str = "CORRUPT STATE"; break; - } - fprintf(stderr, " Lifespan: %s (%i)\n", str, filter->lifespan); - fprintf(stderr, " Priority: %"PRIi64"\n", filter->priority); - fprintf(stderr, " Class: %s\n", filter->class ? filter->class : "(null)"); - str = "yes"; - if (filter->class == NULL) - str = "no, is NULL"; - else if (strchr(filter->class, '\n')) - str = "no, contains LF"; - else if (strstr(filter->class, "::") == NULL) - str = "no, does not contain \"::\""; - else if (strstr(strstr(filter->class, "::") + 2, "::") == NULL) - str = "no, contains only one \"::\""; - else if (verify_utf8(filter->class) < 0) - str = "no, not UTF-8"; - fprintf(stderr, " Class legal: %s\n", str); - if ((filter->ramps == NULL) && (filter->lifespan != LIFESPAN_REMOVE)) - fprintf(stderr, " Ramps are NULL\n"); - } - if (filter != NULL ? (filter->lifespan != LIFESPAN_REMOVE) : (out->table_sums != NULL)) - { - union gamma_ramps left; - size_t depth; - switch (out->depth) - { - case -2: depth = sizeof(double); break; - case -1: depth = sizeof(float); break; - case 8: case 16: case 32: case 64: - depth = (size_t)(out->depth) / 8; - break; - default: - goto corrupt_depth; - } - if (filter && filter->ramps) - { - left.u8.red_size = out->red_size; - left.u8.green_size = out->green_size; - left.u8.blue_size = out->blue_size; - left.u8.red = filter->ramps; - left.u8.green = left.u8.red + out->red_size * depth; - left.u8.blue = left.u8.green + out->green_size * depth; - } - fprintf(stderr," Ramps (stop: filter red, green, blue :: " - "composite red, geen, blue):\n"); - ramps_dump((filter && filter->ramps) ? &left : NULL, - out->table_sums ? out->table_sums + j : NULL, - out->depth, 1, " "); - corrupt_depth:; - } - } - } - } -} - - -/** - * Destroy the state - */ -void state_destroy(void) -{ - size_t i; - - for (i = 0; i < connections_used; i++) - if (connections[i] >= 0) - { - message_destroy(inbound + i); - ring_destroy(outbound + i); - } - free(inbound); - free(outbound); - free(connections); - - if (outputs != NULL) - for (i = 0; i < outputs_n; i++) - output_destroy(outputs + i); - free(outputs); - if (crtcs != NULL) - for (i = 0; i < outputs_n; i++) - libgamma_crtc_destroy(crtcs + i); - free(crtcs); - if (partitions != NULL) - for (i = 0; i < site.partitions_available; i++) - libgamma_partition_destroy(partitions + i); - free(partitions); - libgamma_site_destroy(&site); - - free(sitename); -} - - -#if defined(__clang__) -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wcast-align" -#endif - - -/** - * Marshal the state - * - * @param buf Output buffer for the marshalled data, - * `NULL` to only measure how many bytes - * this buffer needs - * @return The number of marshalled bytes - */ -size_t state_marshal(void* restrict buf) -{ - size_t off = 0, i, n; - char* restrict bs = buf; - - if (argv0_real == NULL) - { - if (bs != NULL) - *(bs + off) = '\0'; - off += 1; - } - else - { - n = strlen(argv0_real) + 1; - if (bs != NULL) - memcpy(bs + off, argv0_real, n); - off += n; - } - - if (bs != NULL) - *(size_t*)(bs + off) = outputs_n; - off += sizeof(size_t); - - for (i = 0; i < outputs_n; i++) - off += output_marshal(outputs + i, bs ? bs + off : NULL); - - if (bs != NULL) - *(int*)(bs + off) = socketfd; - off += sizeof(int); - - if (bs != NULL) - *(sig_atomic_t*)(bs + off) = connection; - off += sizeof(sig_atomic_t); - - if (bs != NULL) - *(int*)(bs + off) = connected; - off += sizeof(int); - - if (bs != NULL) - *(size_t*)(bs + off) = connections_ptr; - off += sizeof(size_t); - - if (bs != NULL) - *(size_t*)(bs + off) = connections_used; - off += sizeof(size_t); - - if (bs != NULL) - memcpy(bs + off, connections, connections_used * sizeof(*connections)); - off += connections_used * sizeof(*connections); - - for (i = 0; i < connections_used; i++) - if (connections[i] >= 0) - { - off += message_marshal(inbound + i, bs ? bs + off : NULL); - off += ring_marshal(outbound + i, bs ? bs + off : NULL); - } - - if (bs != NULL) - *(int*)(bs + off) = method; - off += sizeof(int); - - if (bs != NULL) - *(int*)(bs + off) = sitename != NULL; - off += sizeof(int); - if (sitename != NULL) - { - n = strlen(sitename) + 1; - if (bs != NULL) - memcpy(bs + off, sitename, n); - off += n; - } - - if (bs != NULL) - *(int*)(bs + off) = preserve; - off += sizeof(int); - - return off; -} - - -/** - * Unmarshal the state - * - * @param buf Buffer for the marshalled data - * @return The number of unmarshalled bytes, 0 on error - */ -size_t state_unmarshal(const void* restrict buf) -{ - size_t off = 0, i, n; - const char* restrict bs = buf; - - connections = NULL; - inbound = NULL; - - if (*(bs + off)) - { - n = strlen(bs + off) + 1; - if (!(argv0_real = memdup(bs + off, n))) - return 0; - off += n; - } - else - off += 1; - - outputs_n = *(const size_t*)(bs + off); - off += sizeof(size_t); - - outputs = calloc(outputs_n, sizeof(*outputs)); - if (outputs == NULL) - return 0; - - for (i = 0; i < outputs_n; i++) - { - off += n = output_unmarshal(outputs + i, bs + off); - if (n == 0) - return 0; - } - - socketfd = *(const int*)(bs + off); - off += sizeof(int); - - connection = *(const sig_atomic_t*)(bs + off); - off += sizeof(sig_atomic_t); - - connected = *(const int*)(bs + off); - off += sizeof(int); - - connections_ptr = *(const size_t*)(bs + off); - off += sizeof(size_t); - - connections_alloc = connections_used = *(const size_t*)(bs + off); - off += sizeof(size_t); - - if (connections_alloc > 0) - { - connections = memdup(bs + off, connections_alloc * sizeof(*connections)); - if (connections == NULL) - return 0; - off += connections_used * sizeof(*connections); - - inbound = malloc(connections_alloc * sizeof(*inbound)); - if (inbound == NULL) - return 0; - } - - for (i = 0; i < connections_used; i++) - if (connections[i] >= 0) - { - off += n = message_unmarshal(inbound + i, bs + off); - if (n == 0) - return 0; - off += n = ring_unmarshal(outbound + i, bs + off); - if (n == 0) - return 0; - } - - method = *(const int*)(bs + off); - off += sizeof(int); - - if (*(const int*)(bs + off)) - { - off += sizeof(int); - n = strlen(bs + off) + 1; - if (!(sitename = memdup(bs + off, n))) - return 0; - off += n; - } - else - off += sizeof(int); - - preserve = *(const int*)(bs + off); - off += sizeof(int); - - return off; -} - - -#if defined(__clang__) -# pragma GCC diagnostic pop -#endif - |