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1 | /* |
2 | * Printing interface for PuTTY. |
3 | */ |
4 | |
09ad523a |
5 | #include "putty.h" |
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6 | |
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7 | struct printer_enum_tag { |
8 | int nprinters; |
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9 | DWORD enum_level; |
10 | union { |
11 | LPPRINTER_INFO_4 i4; |
12 | LPPRINTER_INFO_5 i5; |
13 | } info; |
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14 | }; |
15 | |
16 | struct printer_job_tag { |
17 | HANDLE hprinter; |
18 | }; |
19 | |
4c48c989 |
20 | static char *printer_add_enum(int param, DWORD level, char *buffer, |
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21 | int offset, int *nprinters_ptr) |
22 | { |
23 | DWORD needed, nprinters; |
24 | |
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25 | buffer = sresize(buffer, offset+512, char); |
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26 | |
01f7687f |
27 | /* |
28 | * Exploratory call to EnumPrinters to determine how much space |
29 | * we'll need for the output. Discard the return value since it |
30 | * will almost certainly be a failure due to lack of space. |
31 | */ |
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32 | EnumPrinters(param, NULL, level, buffer+offset, 512, |
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33 | &needed, &nprinters); |
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34 | |
35 | if (needed < 512) |
36 | needed = 512; |
37 | |
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38 | buffer = sresize(buffer, offset+needed, char); |
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39 | |
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40 | if (EnumPrinters(param, NULL, level, buffer+offset, |
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41 | needed, &needed, &nprinters) == 0) |
42 | return NULL; |
43 | |
44 | *nprinters_ptr += nprinters; |
45 | |
46 | return buffer; |
47 | } |
48 | |
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49 | printer_enum *printer_start_enum(int *nprinters_ptr) |
50 | { |
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51 | printer_enum *ret = snew(printer_enum); |
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52 | char *buffer = NULL, *retval; |
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53 | |
54 | *nprinters_ptr = 0; /* default return value */ |
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55 | buffer = snewn(512, char); |
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56 | |
4c48c989 |
57 | /* |
58 | * Determine what enumeration level to use. |
59 | * When enumerating printers, we need to use PRINTER_INFO_4 on |
60 | * NT-class systems to avoid Windows looking too hard for them and |
61 | * slowing things down; and we need to avoid PRINTER_INFO_5 as |
62 | * we've seen network printers not show up. |
63 | * On 9x-class systems, PRINTER_INFO_4 isn't available and |
64 | * PRINTER_INFO_5 is recommended. |
65 | * Bletch. |
66 | */ |
67 | if (osVersion.dwPlatformId != VER_PLATFORM_WIN32_NT) { |
68 | ret->enum_level = 5; |
69 | } else { |
70 | ret->enum_level = 4; |
71 | } |
72 | |
a5751e2d |
73 | retval = printer_add_enum(PRINTER_ENUM_LOCAL | PRINTER_ENUM_CONNECTIONS, |
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74 | ret->enum_level, buffer, 0, nprinters_ptr); |
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75 | if (!retval) |
76 | goto error; |
77 | else |
78 | buffer = retval; |
79 | |
4c48c989 |
80 | switch (ret->enum_level) { |
81 | case 4: |
82 | ret->info.i4 = (LPPRINTER_INFO_4)buffer; |
83 | break; |
84 | case 5: |
85 | ret->info.i5 = (LPPRINTER_INFO_5)buffer; |
86 | break; |
87 | } |
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88 | ret->nprinters = *nprinters_ptr; |
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89 | |
90 | return ret; |
91 | |
92 | error: |
93 | sfree(buffer); |
94 | sfree(ret); |
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95 | *nprinters_ptr = 0; |
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96 | return NULL; |
97 | } |
98 | |
99 | char *printer_get_name(printer_enum *pe, int i) |
100 | { |
101 | if (!pe) |
102 | return NULL; |
103 | if (i < 0 || i >= pe->nprinters) |
104 | return NULL; |
4c48c989 |
105 | switch (pe->enum_level) { |
106 | case 4: |
107 | return pe->info.i4[i].pPrinterName; |
108 | case 5: |
109 | return pe->info.i5[i].pPrinterName; |
110 | default: |
111 | return NULL; |
112 | } |
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113 | } |
114 | |
115 | void printer_finish_enum(printer_enum *pe) |
116 | { |
117 | if (!pe) |
118 | return; |
4c48c989 |
119 | switch (pe->enum_level) { |
120 | case 4: |
121 | sfree(pe->info.i4); |
122 | break; |
123 | case 5: |
124 | sfree(pe->info.i5); |
125 | break; |
126 | } |
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127 | sfree(pe); |
128 | } |
129 | |
130 | printer_job *printer_start_job(char *printer) |
131 | { |
3d88e64d |
132 | printer_job *ret = snew(printer_job); |
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133 | DOC_INFO_1 docinfo; |
134 | int jobstarted = 0, pagestarted = 0; |
135 | |
136 | ret->hprinter = NULL; |
137 | if (!OpenPrinter(printer, &ret->hprinter, NULL)) |
138 | goto error; |
139 | |
140 | docinfo.pDocName = "PuTTY remote printer output"; |
141 | docinfo.pOutputFile = NULL; |
142 | docinfo.pDatatype = "RAW"; |
143 | |
144 | if (!StartDocPrinter(ret->hprinter, 1, (LPSTR)&docinfo)) |
145 | goto error; |
146 | jobstarted = 1; |
147 | |
148 | if (!StartPagePrinter(ret->hprinter)) |
149 | goto error; |
150 | pagestarted = 1; |
151 | |
152 | return ret; |
153 | |
154 | error: |
155 | if (pagestarted) |
156 | EndPagePrinter(ret->hprinter); |
157 | if (jobstarted) |
158 | EndDocPrinter(ret->hprinter); |
159 | if (ret->hprinter) |
160 | ClosePrinter(ret->hprinter); |
161 | sfree(ret); |
162 | return NULL; |
163 | } |
164 | |
165 | void printer_job_data(printer_job *pj, void *data, int len) |
166 | { |
167 | DWORD written; |
168 | |
169 | if (!pj) |
170 | return; |
171 | |
172 | WritePrinter(pj->hprinter, data, len, &written); |
173 | } |
174 | |
175 | void printer_finish_job(printer_job *pj) |
176 | { |
177 | if (!pj) |
178 | return; |
179 | |
180 | EndPagePrinter(pj->hprinter); |
181 | EndDocPrinter(pj->hprinter); |
182 | ClosePrinter(pj->hprinter); |
183 | sfree(pj); |
184 | } |