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-rw-r--r--src/state.c638
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
-